Help with new version of Arad water meter (Sonata) #3414

AryehGielchinsky · 2025-11-26T17:09:10Z

AryehGielchinsky
Nov 26, 2025

I've got an Arad Sonata water meter. I'm able to detect it using the current Arad device (number 260), though I have to divide the water reading by 100 (my current water usage is about 9.4m3, but the output is 942.4).

The division by 100 isn't a real issue by itself, but the new meter is digital and has a current flow rate on the display with very high precision, and I'd like to see if the flow rate is also being sent.

I'm having trouble using the custom decoder. I can't find my serial number 03077959. In hex it is 2ef747, which flipped is 47f72e, which I can't find.

When I use rtl_433 -f 916.2M -R260 -F json:builtin_decoder.json I see my meter on the 29th and 59th second of every minute (with a funny charactor afterwards):

{"time" : "2025-11-26 16:46:58", "model" : "AradMsMeter-Dialog3G", "id" : "14514837P", "volume_m3" : 191918.406}
{"time" : "2025-11-26 16:46:59", "model" : "AradMsMeter-Dialog3G", "id" : "03077959à", "volume_m3" : 942.400}
{"time" : "2025-11-26 16:47:00", "model" : "AradMsMeter-Dialog3G", "id" : "00636330}", "volume_m3" : 161692.000}
{"time" : "2025-11-26 16:47:01", "model" : "AradMsMeter-Dialog3G", "id" : "14509102P", "volume_m3" : 293090.406}
{"time" : "2025-11-26 16:47:06", "model" : "AradMsMeter-Dialog3G", "id" : "14507293P", "volume_m3" : 48903.000}
{"time" : "2025-11-26 16:47:07", "model" : "AradMsMeter-Dialog3G", "id" : "14514814P", "volume_m3" : 148379.109}
{"time" : "2025-11-26 16:47:10", "model" : "AradMsMeter-Dialog3G", "id" : "14512725P", "volume_m3" : 202041.797}
{"time" : "2025-11-26 16:47:11", "model" : "AradMsMeter-Dialog3G", "id" : "00000000à", "volume_m3" : 0.000}
{"time" : "2025-11-26 16:47:13", "model" : "AradMsMeter-Dialog3G", "id" : "14508661P", "volume_m3" : 184010.797}
{"time" : "2025-11-26 16:47:13", "model" : "AradMsMeter-Dialog3G", "id" : "14570315P", "volume_m3" : 282574.406}
{"time" : "2025-11-26 16:47:16", "model" : "AradMsMeter-Dialog3G", "id" : "09860917à", "volume_m3" : 1389.500}
{"time" : "2025-11-26 16:47:22", "model" : "AradMsMeter-Dialog3G", "id" : "14507296P", "volume_m3" : 271362.719}
{"time" : "2025-11-26 16:47:28", "model" : "AradMsMeter-Dialog3G", "id" : "14570050P", "volume_m3" : 139887.109}
{"time" : "2025-11-26 16:47:28", "model" : "AradMsMeter-Dialog3G", "id" : "14372495P", "volume_m3" : 659103.625}
{"time" : "2025-11-26 16:47:28", "model" : "AradMsMeter-Dialog3G", "id" : "14514837P", "volume_m3" : 191918.406}
{"time" : "2025-11-26 16:47:29", "model" : "AradMsMeter-Dialog3G", "id" : "03077959à", "volume_m3" : 942.400}
{"time" : "2025-11-26 16:47:30", "model" : "AradMsMeter-Dialog3G", "id" : "00636330}", "volume_m3" : 161692.000}
{"time" : "2025-11-26 16:47:31", "model" : "AradMsMeter-Dialog3G", "id" : "14570315P", "volume_m3" : 282574.500}
{"time" : "2025-11-26 16:47:31", "model" : "AradMsMeter-Dialog3G", "id" : "14509102P", "volume_m3" : 293090.406}
{"time" : "2025-11-26 16:47:36", "model" : "AradMsMeter-Dialog3G", "id" : "14507293P", "volume_m3" : 48903.000}
{"time" : "2025-11-26 16:47:37", "model" : "AradMsMeter-Dialog3G", "id" : "14514814P", "volume_m3" : 148379.109}
{"time" : "2025-11-26 16:47:40", "model" : "AradMsMeter-Dialog3G", "id" : "14512725P", "volume_m3" : 202042.109}
{"time" : "2025-11-26 16:47:41", "model" : "AradMsMeter-Dialog3G", "id" : "00000000à", "volume_m3" : 0.000}
{"time" : "2025-11-26 16:47:43", "model" : "AradMsMeter-Dialog3G", "id" : "14508661P", "volume_m3" : 184010.797}
{"time" : "2025-11-26 16:47:46", "model" : "AradMsMeter-Dialog3G", "id" : "09860917à", "volume_m3" : 1389.500}
{"time" : "2025-11-26 16:47:49", "model" : "AradMsMeter-Dialog3G", "id" : "14570315P", "volume_m3" : 282574.594}
{"time" : "2025-11-26 16:47:52", "model" : "AradMsMeter-Dialog3G", "id" : "14507296P", "volume_m3" : 271362.719}
{"time" : "2025-11-26 16:47:58", "model" : "AradMsMeter-Dialog3G", "id" : "14570050P", "volume_m3" : 139887.109}
{"time" : "2025-11-26 16:47:58", "model" : "AradMsMeter-Dialog3G", "id" : "14372495P", "volume_m3" : 659103.625}
{"time" : "2025-11-26 16:47:58", "model" : "AradMsMeter-Dialog3G", "id" : "14514837P", "volume_m3" : 191918.406}
{"time" : "2025-11-26 16:47:59", "model" : "AradMsMeter-Dialog3G", "id" : "03077959à", "volume_m3" : 942.400}
{"time" : "2025-11-26 16:48:00", "model" : "AradMsMeter-Dialog3G", "id" : "00636330}", "volume_m3" : 161692.000}
{"time" : "2025-11-26 16:48:02", "model" : "AradMsMeter-Dialog3G", "id" : "14509102P", "volume_m3" : 293090.406}
{"time" : "2025-11-26 16:48:06", "model" : "AradMsMeter-Dialog3G", "id" : "14507293P", "volume_m3" : 48903.000}
{"time" : "2025-11-26 16:48:07", "model" : "AradMsMeter-Dialog3G", "id" : "14514814P", "volume_m3" : 148379.109}
{"time" : "2025-11-26 16:48:07", "model" : "AradMsMeter-Dialog3G", "id" : "14570315P", "volume_m3" : 282574.594}
{"time" : "2025-11-26 16:48:10", "model" : "AradMsMeter-Dialog3G", "id" : "14512725P", "volume_m3" : 202042.297}
{"time" : "2025-11-26 16:48:11", "model" : "AradMsMeter-Dialog3G", "id" : "00000000à", "volume_m3" : 0.000}
{"time" : "2025-11-26 16:48:13", "model" : "AradMsMeter-Dialog3G", "id" : "14508661P", "volume_m3" : 184010.797}
{"time" : "2025-11-26 16:48:16", "model" : "AradMsMeter-Dialog3G", "id" : "09860917à", "volume_m3" : 1389.500}
{"time" : "2025-11-26 16:48:22", "model" : "AradMsMeter-Dialog3G", "id" : "14507296P", "volume_m3" : 271362.719}
{"time" : "2025-11-26 16:48:25", "model" : "AradMsMeter-Dialog3G", "id" : "14570315P", "volume_m3" : 282574.719}
{"time" : "2025-11-26 16:48:28", "model" : "AradMsMeter-Dialog3G", "id" : "14570050P", "volume_m3" : 139887.109}
{"time" : "2025-11-26 16:48:28", "model" : "AradMsMeter-Dialog3G", "id" : "14372495P", "volume_m3" : 659103.625}
{"time" : "2025-11-26 16:48:28", "model" : "AradMsMeter-Dialog3G", "id" : "14514837P", "volume_m3" : 191918.406}
{"time" : "2025-11-26 16:48:29", "model" : "AradMsMeter-Dialog3G", "id" : "03077959à", "volume_m3" : 942.400}
{"time" : "2025-11-26 16:48:30", "model" : "AradMsMeter-Dialog3G", "id" : "00636330}", "volume_m3" : 161692.000}
{"time" : "2025-11-26 16:48:31", "model" : "AradMsMeter-Dialog3G", "id" : "14509102P", "volume_m3" : 293090.406}
{"time" : "2025-11-26 16:48:36", "model" : "AradMsMeter-Dialog3G", "id" : "14507293P", "volume_m3" : 48903.000}
{"time" : "2025-11-26 16:48:37", "model" : "AradMsMeter-Dialog3G", "id" : "14514814P", "volume_m3" : 148379.109}
{"time" : "2025-11-26 16:48:40", "model" : "AradMsMeter-Dialog3G", "id" : "14512725P", "volume_m3" : 202042.609}
{"time" : "2025-11-26 16:48:41", "model" : "AradMsMeter-Dialog3G", "id" : "00000000à", "volume_m3" : 0.000}
{"time" : "2025-11-26 16:48:43", "model" : "AradMsMeter-Dialog3G", "id" : "14508661P", "volume_m3" : 184010.797}
{"time" : "2025-11-26 16:48:43", "model" : "AradMsMeter-Dialog3G", "id" : "14570315P", "volume_m3" : 282574.719}
{"time" : "2025-11-26 16:48:46", "model" : "AradMsMeter-Dialog3G", "id" : "09860917à", "volume_m3" : 1389.500}
{"time" : "2025-11-26 16:48:52", "model" : "AradMsMeter-Dialog3G", "id" : "14507296P", "volume_m3" : 271362.719}
{"time" : "2025-11-26 16:48:58", "model" : "AradMsMeter-Dialog3G", "id" : "14570050P", "volume_m3" : 139887.109}
{"time" : "2025-11-26 16:48:58", "model" : "AradMsMeter-Dialog3G", "id" : "14372495P", "volume_m3" : 659103.625}
{"time" : "2025-11-26 16:48:58", "model" : "AradMsMeter-Dialog3G", "id" : "14514837P", "volume_m3" : 191918.406}
{"time" : "2025-11-26 16:48:59", "model" : "AradMsMeter-Dialog3G", "id" : "03077959à", "volume_m3" : 942.400}
{"time" : "2025-11-26 16:49:01", "model" : "AradMsMeter-Dialog3G", "id" : "14570315P", "volume_m3" : 282574.719}
{"time" : "2025-11-26 16:49:01", "model" : "AradMsMeter-Dialog3G", "id" : "14509102P", "volume_m3" : 293090.406}
{"time" : "2025-11-26 16:49:06", "model" : "AradMsMeter-Dialog3G", "id" : "14507293P", "volume_m3" : 48903.000}
{"time" : "2025-11-26 16:49:07", "model" : "AradMsMeter-Dialog3G", "id" : "14514814P", "volume_m3" : 148379.109}
{"time" : "2025-11-26 16:49:10", "model" : "AradMsMeter-Dialog3G", "id" : "14512725P", "volume_m3" : 202042.797}
{"time" : "2025-11-26 16:49:11", "model" : "AradMsMeter-Dialog3G", "id" : "00000000à", "volume_m3" : 0.000}
{"time" : "2025-11-26 16:49:13", "model" : "AradMsMeter-Dialog3G", "id" : "14508661P", "volume_m3" : 184010.797}
{"time" : "2025-11-26 16:49:16", "model" : "AradMsMeter-Dialog3G", "id" : "09860917à", "volume_m3" : 1389.500}
{"time" : "2025-11-26 16:49:19", "model" : "AradMsMeter-Dialog3G", "id" : "14570315P", "volume_m3" : 282574.719}
{"time" : "2025-11-26 16:49:22", "model" : "AradMsMeter-Dialog3G", "id" : "14507296P", "volume_m3" : 271362.906}
{"time" : "2025-11-26 16:49:28", "model" : "AradMsMeter-Dialog3G", "id" : "14570050P", "volume_m3" : 139887.109}
{"time" : "2025-11-26 16:49:28", "model" : "AradMsMeter-Dialog3G", "id" : "14372495P", "volume_m3" : 659103.625}
{"time" : "2025-11-26 16:49:28", "model" : "AradMsMeter-Dialog3G", "id" : "14514837P", "volume_m3" : 191918.406}
{"time" : "2025-11-26 16:49:29", "model" : "AradMsMeter-Dialog3G", "id" : "03077959à", "volume_m3" : 942.400}
{"time" : "2025-11-26 16:49:32", "model" : "AradMsMeter-Dialog3G", "id" : "14509102P", "volume_m3" : 293090.406}

But when I try to reproduce the current device with a custom decoder, I can't find my serial.
rtl_433 -f 916.2M -X "name=Arad,modulation=FSK_MC_ZEROBIT,short=8.4,long=8.4,reset=30,invert" -F json:customer_decdoder_invert.json

{"time" : "2025-11-26 16:58:55", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 227, "data" : "880000000000f9a42bb1eb212d2d4f79c1404c78ac0031362d12a2a3e"}], "codes" : ["{227}880000000000f9a42bb1eb212d2d4f79c1404c78ac0031362d12a2a3e"]}
{"time" : "2025-11-26 16:58:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 226, "data" : "900000000001f3485763d6425a1296f38282bac0a80062239b1b4487c"}], "codes" : ["{226}900000000001f3485763d6425a1296f38282bac0a80062239b1b4487c"]}
{"time" : "2025-11-26 16:58:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 151, "data" : "80000000007cd215d8f590971e9db6e0a07930"}], "codes" : ["{151}80000000007cd215d8f590971e9db6e0a07930"]}
{"time" : "2025-11-26 16:58:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "80000000007cd215d8f590972af5bae0a1a0903a001922515ede81f"}], "codes" : ["{220}80000000007cd215d8f590972af5bae0a1a0903a001922515ede81f"]}
{"time" : "2025-11-26 16:58:59", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 228, "data" : "c5e0000000007cd215d8f590968fee5c0081a0480000185d43c1dee1f"}], "codes" : ["{228}c5e0000000007cd215d8f590968fee5c0081a0480000185d43c1dee1f"]}
{"time" : "2025-11-26 16:58:59", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 1, "data" : "8"}], "codes" : ["{1}8"]}
{"time" : "2025-11-26 16:59:01", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 219, "data" : "80000000007cd215d8f590965cc9bae0a1b1705800183ccef720e1e"}], "codes" : ["{219}80000000007cd215d8f590965cc9bae0a1b1705800183ccef720e1e"]}
{"time" : "2025-11-26 16:59:06", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 221, "data" : "fffffffffffcd215d8f590963abbbae0a0a8ec0e0019773a1bca71f0"}], "codes" : ["{221}fffffffffffcd215d8f590963abbbae0a0a8ec0e0019773a1bca71f0"]}
{"time" : "2025-11-26 16:59:07", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 191, "data" : "80000000007cd215d8f59096fcf5bae0a01f482c00188910"}], "codes" : ["{191}80000000007cd215d8f59096fcf5bae0a01f482c00188910"]}
{"time" : "2025-11-26 16:59:07", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 24, "data" : "fe208f"}], "codes" : ["{24}fe208f"]}
{"time" : "2025-11-26 16:59:10", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 221, "data" : "80000000007cd215d8f59096aae5bae0a0c5a83c0019f888574661f0"}], "codes" : ["{221}80000000007cd215d8f59096aae5bae0a0c5a83c0019f888574661f0"]}
{"time" : "2025-11-26 16:59:11", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 222, "data" : "80000000007cd215d8f590d7cea7bae0a16be86a00116b766d8fb1f8"}], "codes" : ["{222}80000000007cd215d8f590d7cea7bae0a16be86a00116b766d8fb1f8"]}
{"time" : "2025-11-26 16:59:13", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 219, "data" : "80000000007cd215d8f59096eac5bae0a1d826380019c5a9012f01e"}], "codes" : ["{219}80000000007cd215d8f59096eac5bae0a1d826380019c5a9012f01e"]}
{"time" : "2025-11-26 16:59:13", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 228, "data" : "d800000000007cd215d8f5909696a7bce0a0263c5600189b16895151f"}], "codes" : ["{228}d800000000007cd215d8f5909696a7bce0a0263c5600189b16895151f"]}
{"time" : "2025-11-26 16:59:13", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 1, "data" : "8"}], "codes" : ["{1}8"]}
{"time" : "2025-11-26 16:59:22", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 221, "data" : "fffffffffffcd215d8f5909640bbbae0a042d05200197ee2bb1191f8"}], "codes" : ["{221}fffffffffffcd215d8f5909640bbbae0a042d05200197ee2bb1191f8"]}
{"time" : "2025-11-26 16:59:28", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 227, "data" : "880000000000f9a42bb1eb212d094b79c1415d6054003111cd8da243e"}], "codes" : ["{227}880000000000f9a42bb1eb212d094b79c1415d6054003111cd8da243e"]}
{"time" : "2025-11-26 16:59:28", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 1, "data" : "8"}], "codes" : ["{1}8"]}
{"time" : "2025-11-26 16:59:28", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "80000000007cd215d8f590971e9db6e0a07924c80019f005813951f"}], "codes" : ["{220}80000000007cd215d8f590971e9db6e0a07924c80019f005813951f"]}
{"time" : "2025-11-26 16:59:28", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "fffffffffffcd215d8f590972af5bae0a1a0903a001922515ede81f"}], "codes" : ["{220}fffffffffffcd215d8f590972af5bae0a1a0903a001922515ede81f"]}
{"time" : "2025-11-26 16:59:29", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 228, "data" : "c000000000007cd215d8f590968fee5c0081a0480000185d43c1dee1f"}], "codes" : ["{228}c000000000007cd215d8f590968fee5c0081a0480000185d43c1dee1f"]}
{"time" : "2025-11-26 16:59:29", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 1, "data" : "8"}], "codes" : ["{1}8"]}
{"time" : "2025-11-26 16:59:31", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 227, "data" : "9c0000000000f9a42bb1eb212d2d4f79c1404c78ac0031362d12a2a3e"}], "codes" : ["{227}9c0000000000f9a42bb1eb212d2d4f79c1404c78ac0031362d12a2a3e"]}
{"time" : "2025-11-26 16:59:31", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "80000000007cd215d8f590965cc9bae0a1b1705800183ccef720e1f"}], "codes" : ["{220}80000000007cd215d8f590965cc9bae0a1b1705800183ccef720e1f"]}
{"time" : "2025-11-26 16:59:36", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "fffffffffffcd215d8f590963abbbae0a0b2ec0e001962ee634d51f"}], "codes" : ["{220}fffffffffffcd215d8f590963abbbae0a0b2ec0e001962ee634d51f"]}
{"time" : "2025-11-26 16:59:37", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 55, "data" : "fffffffffff348"}], "codes" : ["{55}fffffffffff348"]}
{"time" : "2025-11-26 16:59:40", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "80000000007cd215d8f59096aae5bae0a0c5a83c0019f888574661f"}], "codes" : ["{220}80000000007cd215d8f59096aae5bae0a0c5a83c0019f888574661f"]}
{"time" : "2025-11-26 16:59:41", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 223, "data" : "fffffffffffcd215d8f590d7cea7bae0a16be86a00116b766d8fb1f8"}], "codes" : ["{223}fffffffffffcd215d8f590d7cea7bae0a16be86a00116b766d8fb1f8"]}
{"time" : "2025-11-26 16:59:43", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "80000000007cd215d8f59096eac5bae0a1d826380019c5a9012f01f"}], "codes" : ["{220}80000000007cd215d8f59096eac5bae0a1d826380019c5a9012f01f"]}
{"time" : "2025-11-26 16:59:49", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 224, "data" : "a00000000007cd215d8f5909696a7bce0a0263c5600189b16895151f"}], "codes" : ["{224}a00000000007cd215d8f5909696a7bce0a0263c5600189b16895151f"]}
{"time" : "2025-11-26 16:59:49", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 1, "data" : "8"}], "codes" : ["{1}8"]}
{"time" : "2025-11-26 16:59:52", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 221, "data" : "80000000003e690aec7ac84b205ddd7050216829000cbf715d88c8f8"}], "codes" : ["{221}80000000003e690aec7ac84b205ddd7050216829000cbf715d88c8f8"]}
{"time" : "2025-11-26 16:59:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 227, "data" : "a7fffffffffff9a42bb1eb212d094b79c1415d6054003111cd8da243e"}], "codes" : ["{227}a7fffffffffff9a42bb1eb212d094b79c1415d6054003111cd8da243e"]}
{"time" : "2025-11-26 16:59:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "80000000007cd215d8f590971e9db6e0a07924c80019f005813951f"}], "codes" : ["{220}80000000007cd215d8f590971e9db6e0a07924c80019f005813951f"]}
{"time" : "2025-11-26 16:59:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "80000000007cd215d8f590972af5bae0a1a0903a001922515ede81f"}], "codes" : ["{220}80000000007cd215d8f590972af5bae0a1a0903a001922515ede81f"]}
{"time" : "2025-11-26 16:59:59", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 227, "data" : "840000000000f9a42bb1eb212d1fdcb801034090000030ba8783bdc3e"}], "codes" : ["{227}840000000000f9a42bb1eb212d1fdcb801034090000030ba8783bdc3e"]}
{"time" : "2025-11-26 17:00:01", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "80000000007cd215d8f590965cc9bae0a1b1705800183ccef720e1f"}], "codes" : ["{220}80000000007cd215d8f590965cc9bae0a1b1705800183ccef720e1f"]}
{"time" : "2025-11-26 17:00:06", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 221, "data" : "80000000003e690aec7ac84b1d5ddd70505d7607000c77b610b360f8"}], "codes" : ["{221}80000000003e690aec7ac84b1d5ddd70505d7607000c77b610b360f8"]}
{"time" : "2025-11-26 17:00:07", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 49, "data" : "fffffffffff30"}], "codes" : ["{49}fffffffffff30"]}
{"time" : "2025-11-26 17:00:07", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 227, "data" : "b00000000000f9a42bb1eb212d2d4f79c1404c78ac0031362d12a2a3e"}], "codes" : ["{227}b00000000000f9a42bb1eb212d2d4f79c1404c78ac0031362d12a2a3e"]}
{"time" : "2025-11-26 17:00:07", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 1, "data" : "8"}], "codes" : ["{1}8"]}
{"time" : "2025-11-26 17:00:10", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 221, "data" : "80000000007cd215d8f59096aae5bae0a0c5a83c0019f888574661f8"}], "codes" : ["{221}80000000007cd215d8f59096aae5bae0a0c5a83c0019f888574661f8"]}
{"time" : "2025-11-26 17:00:11", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 223, "data" : "80000000007cd215d8f590d7cea7bae0a16fe86a0010adb60c8981fc"}], "codes" : ["{223}80000000007cd215d8f590d7cea7bae0a16fe86a0010adb60c8981fc"]}
{"time" : "2025-11-26 17:00:13", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 221, "data" : "80000000007cd215d8f59096eac5bae0a1da2638001906d83e4241f8"}], "codes" : ["{221}80000000007cd215d8f59096eac5bae0a1da2638001906d83e4241f8"]}

And without the invert:
rtl_433 -f 916.2M -X "name=Arad,modulation=FSK_MC_ZEROBIT,short=8.4,long=8.4,reset=30" -F json:customer_decdoder.json

{"time" : "2025-11-26 17:04:52", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "0000000000032dea270a6f69bf44451f5fb32fadffe6092e58ae8e0"}], "codes" : ["{220}0000000000032dea270a6f69bf44451f5fb32fadffe6092e58ae8e0"]}
{"time" : "2025-11-26 17:04:55", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 227, "data" : "23ffffffffff065bd44e14ded2d2b0863ebfb38753ffcec9d2ed5d5c0"}], "codes" : ["{227}23ffffffffff065bd44e14ded2d2b0863ebfb38753ffcec9d2ed5d5c0"]}
{"time" : "2025-11-26 17:04:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 227, "data" : "7fffffffffff065bd44e14ded2f6b4863ebea29fabffceee32725dbc0"}], "codes" : ["{227}7fffffffffff065bd44e14ded2f6b4863ebea29fabffceee32725dbc0"]}
{"time" : "2025-11-26 17:04:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 1, "data" : "0"}], "codes" : ["{1}0"]}
{"time" : "2025-11-26 17:04:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "0000000000032dea270a6f68e162491f5f86db37ffe60ffa7ec6ae0"}], "codes" : ["{220}0000000000032dea270a6f68e162491f5f86db37ffe60ffa7ec6ae0"]}
{"time" : "2025-11-26 17:04:58", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 221, "data" : "7fffffffff832dea270a6f68d50a451f5e5f6fc5ffe6ddaea1217e00"}], "codes" : ["{221}7fffffffff832dea270a6f68d50a451f5e5f6fc5ffe6ddaea1217e00"]}
{"time" : "2025-11-26 17:04:59", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 227, "data" : "2fffffffffff065bd44e14ded2e02347fefcbb6fffffcec39a0298bc0"}], "codes" : ["{227}2fffffffffff065bd44e14ded2e02347fefcbb6fffffcec39a0298bc0"]}
{"time" : "2025-11-26 17:04:59", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 1, "data" : "0"}], "codes" : ["{1}0"]}
{"time" : "2025-11-26 17:05:02", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "7fffffffff832dea270a6f69a336451f5e4e8fa7ffe7c33108df1e0"}], "codes" : ["{220}7fffffffff832dea270a6f69a336451f5e4e8fa7ffe7c33108df1e0"]}
{"time" : "2025-11-26 17:05:06", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 220, "data" : "7fffffffff832dea270a6f69c544451f5f4513f1ffe71093de993e0"}], "codes" : ["{220}7fffffffff832dea270a6f69c544451f5f4513f1ffe71093de993e0"]}
{"time" : "2025-11-26 17:05:07", "model" : "Arad", "count" : 1, "num_rows" : 1, "rows" : [{"len" : 147, "data" : "7fffffffff832dea270a6f69030a451f5fd8a"}], "codes" : ["{147}7fffffffff832dea270a6f69030a451f5fd8a"]}

What do I need to change in the custom decoder?
Thanks

zuckschwerdt · 2025-11-26T19:02:29Z

zuckschwerdt
Nov 26, 2025
Collaborator

You can get the raw bits using -R 260:v, no need for a flex decoder.

0 replies

AryehGielchinsky · 2025-11-26T19:18:07Z

AryehGielchinsky
Nov 26, 2025
Author

I see the raw bits in the codes field now, but still not sure how to extract my meter serial number from it.

My serial number 03077959, so I'm looking for 47f72e (unless I'm misundertanding the conversion).

rtl_433 -f 916.2M -R260:v

time      : 2025-11-26 19:11:59
model     : AradMsMeter-Dialog3G                   Serial No : 03077959�
Volume    : 956.7 m3
[pulse_slicer_manchester_zerobit] Arad/Master Meter Dialog3G water utility meter
codes     : {228}a5e0000000007cd215d8f590968fee5c0080be4a0000193d8b96aa71f


time      : 2025-11-26 19:12:29
model     : AradMsMeter-Dialog3G                   Serial No : 03077959�
Volume    : 956.7 m3
[pulse_slicer_manchester_zerobit] Arad/Master Meter Dialog3G water utility meter
codes     : {228}e200000000007cd215d8f590968fee5c0080be4a0000193d8b96aa71f

1 reply

zuckschwerdt Nov 27, 2025
Collaborator

You need to remove leading bits, see e.g. this BitBench

avicarmeli · 2026-02-07T08:40:57Z

avicarmeli
Feb 7, 2026

@AryehGielchinsky The driver was both test against Dialog 3G and Sonata meters (In Tel Aviv). if you look in the docs at the beginning of the code you can see what part of the massage was deciphered.
Anyway although the Sonata meter displays flow rate, there is no evidence for that highly dynamic data in the massage.

4 replies

embaldor Oct 2, 2026

Hi,

I'm in Herzliya and have an ARAD LR9 DN20 IP68 SV 5.01 meter. I'm currently trying to receive its transmissions using an RTL-SDR Blog V4L and rtl_433. So far I haven't managed to capture any transmissions.

A few questions, if you don't mind:

Does the meter only transmit when it detects a flow?
Approximately what from what distance were you able to receive the transmission from the meter?
Do you know whether the LR9 DN20 uses the same Dialog3G protocol?
Do you still have the original rtl_433 configuration or any raw recordings?
Is the SI4432/ESP32 solution still your recommended approach?

I'd appreciate any guidance. I'm happy to share my findings as well.

Thanks!
Ehud

avicarmeli Oct 2, 2026

Hello Ehud,
Unfortunately your water meter is new and implies communication over LoraWan which is an encrypted protocol much like WiFi, so there is no known way, at least to me, to read it.
Avi

embaldor Oct 2, 2026

Thanks for the quick reply. I was wandering how would this network work reliably with clients transmissions potentially causing collisions. I looked into the protocol and now everything is clear. I appreciate your help.
Shabbat Shalom,
Ehud

merbanan Oct 2, 2026
Maintainer

There is code landing soonish for decoding lorawn but it needs the key to decode (I assume).

AryehGielchinsky · 2026-02-09T21:45:28Z

AryehGielchinsky
Feb 9, 2026
Author

Ok, thanks for taking a look again. Closing as current flow rate isn't likely in the the payload.

0 replies

ghost · 2026-02-10T11:09:46Z

ghost
Feb 10, 2026

@AryehGielchinsky ,
pls dont close this thread.
you gave us some very usefull information.
first: frequency: 916.2M seems good.
to lower the few artefacts pls try 916.185M or 916.2.015M
and log again your known sensor " 03077959" for 10 mins or so.
and consumpt >1 Liter or so while logging.
take the last -R260 Decoder for this.
rtl_433 -R260:vv -f 916.185M >>R260_09.log.
post it here pls.

0 replies

AryehGielchinsky · 2026-02-10T12:45:55Z

AryehGielchinsky
Feb 10, 2026
Author

@AkaBoing I've reopened the discussion. Here is the log file made with a sink partially open for about 20 minutes.

rtl_433 -R260:vv -f 916.185M | rg -B1 -A4 "Serial No : 03077959-00" >>R260_916185M.log
R260_916185M.log

Before recording the log I didn't see more than 1 code for my meter, so I used -A4. If there is a better way to get only my data I'd be happy to rerecord.

0 replies

ghost · 2026-02-10T12:59:41Z

ghost
Feb 10, 2026

thx @AryehGielchinsky ,
this helps a lot finding the damned "Checksum puzzle", (hope so..)
btw: there ist enough space in the Message for a flow rate, im sure, we find it..
@zuckschwerdt;
the last 2 bytes before the suffix 0xf8 change, so i think its a 16 bit Checksum..

0 replies

avicarmeli · 2026-02-10T14:47:11Z

avicarmeli
Feb 10, 2026

@AkaBoing

here is data I gathered from my neighborhood. I couldn't find any CRC in that. Maybe you will do better.

1 reply

ghost Feb 10, 2026

thx, either i find the crc in 5 mins or never.
But i dont give up..
Actually im hunting for the flowrate (i think i found it but this needs to be validated)
From my understanding: If no water flows then one value must be Zero, otherwise Not.. lol

Edit:
I Prozessed the first 500 codes from the Excel list, all without Errors.
Most suffix are wrong FC or F, but thats irrelevant.

AryehGielchinsky · 2026-02-10T17:29:12Z

AryehGielchinsky
Feb 10, 2026
Author

I checked some of my neighbors whose signal I can receive, and their total water is also off by a factor of 100 from the implementation of device 260. rtl_433 -f 916.2M -R260 -F json

As of commit 05438e4 my id is 03077959-00 (the -00 is not part of my serial on my meter) . rtl_433 says my reading is 8755.300m^3, but it is really 87.55300m^3.

2 nearby neighbors have ids of the form 145XXXXX-70 (the -70 is not visible on their meters). rtl_433 also says they used 100 times more than they really did.

I'm don't know of a factor that is sent in transmission, so it probably doesn't make sense to change the code based on my neighborhood if others are getting the correct reading.

0 replies

ghost · 2026-02-10T18:03:48Z

ghost
Feb 10, 2026

im sure, the bytes following the water consumption stand for a factor and the Dimension. I tend to use the RAW value but its no big deal to take any factor you want f.i. /100 or *0.01.
M-Bus -R104 water meter mostly use RAW, Default Liter btw.

0 replies

ghost · 2026-02-10T18:58:42Z

ghost
Feb 10, 2026

Most water meter have a resolution mark.
f.i. Q1 2.5 m3 or just Q500.
Is there any on your meter?
Maybe this ist also Part of the message.
(The bytes after the UID.. or somewhere else.)

0 replies

ghost · 2026-02-10T21:20:46Z

ghost
Feb 10, 2026

last for today..
BB with 24bit FLOW
what do you think?

BB Link ist pain for me..
https://triq.net/bitbench#c=3e690aec7ac84b%2047f72e%200040%205f5501%20000c%20532aeb%2038%2050%20f8&c=3e690aec7ac84b%2047f72e%200040%20615501%20000c%205641a6%200a%2088%20f8&c=3e690aec7ac84b%2047f72e%200040%20755501%20000c%20ebb7cd%2023%2010%20f8&f=UID%3A56h%20SID%3A%3C24d%20%3Fhhhh%20CON%3A%3C24d%20%3Fhhhh%20FLOW%3F%3A%3C24d%20hhhh%20SUF%3A8h&z=1&cf=XOR&cl=144&cw=8

0 replies

avicarmeli · 2026-02-11T06:51:49Z

avicarmeli
Feb 11, 2026

@AkaBoing If your guess was correct I would expect the flow parameter to decay to 0 for periods of no flow (which are evident quite often).
Unfortunately never saw there zeros.

1 reply

ghost Feb 11, 2026

this FLOW rate is a High Resolution value, for sure.
I took some of your Excel list and saw Not a Zero value but a stabil value over Long Time which suddenly changes , the water read also increased
This flaw rate devided by the Q-factor (16384 for newest digital Sonata) gives a relative valid value.
Im working on this, @avicarmeli your Excel list is a big Help!
stay tuned..

ghost · 2026-02-11T12:57:24Z

ghost
Feb 11, 2026

the Flow rate formula works with the newest Sonata
but not with older devices
the ID 09174547 has a unknown QF (115) due to maybe older software release. dunno
i tend to cancel all this, as Checksum is also a NOGO (for me)
But thx for all your work.

2 replies

avicarmeli Feb 11, 2026

That makes sense as Dialog 3G is not suppose to measure flow

ghost Feb 11, 2026

OK

ghost · 2026-02-12T12:24:39Z

ghost
Feb 12, 2026

@avicarmeli
i extracted your Excel list to a BB.. lol(a very big one)
and found this:
the UID isnt 56 but 48bit the new 8bit value is maybe a device description. (0x4b = sonata?)

UID:3e690aec7ac8 ?4b SID:03077959 ?0040 CON:00087413 ?000c ?:cdb7eb 2310 SUF:f8
UID:3e690aec7ac8 ?43 SID:09174547 ?7300 CON:00001296 ?0005 ?:fe8b07 cdb8 SUF:f8
UID:3e690aec7ac8 ?46 SID:01506599 ?e600 CON:00002592 ?000a ?:fd970f 9b71 SUF:f0

used BB format string: UID:48h ?8h SID:<24d ?hhhh CON:<24d ?hhhh ?<24h ?hhhh SUF:8h

0 replies

avicarmeli · 2026-02-12T14:01:33Z

avicarmeli
Feb 12, 2026

The UID is in did a 56 bits long.
I used as preamble only the last 48 bits, which I suspect lets in some not perfect data (still have to investigate into that). I will send later some more recordings.
Full UID should look like that?: 3e690aec7ac84b .
I guess the lines you saw with 43 and 46 in the end are errors since you can find same serials with 4b.
On the other hand the second byte after the SID I suspect to be scale factor, the 0x40 in Sonata stands for divide by 100 and the 0x00 in Dialog 3G us for divide by 10 if I am guessing right.

1 reply

ghost Feb 12, 2026

I dont think this Byte is an Error.
In your Excel there are 100+ with those 0x43, 0x45.. value, perhaps a Software Release number..
A simple sort by SID shows the exact same Byte for all identic SID, this cant be an Error..
But dunno for real.
You are right, the 2 bytes after SID is a factor for sure.
The 2 bytes after wread the same (Dimension and factor). Time will tell us..

ghost · 2026-02-12T20:24:59Z

ghost
Feb 12, 2026

@avicarmeli,
pls, if u make a new scan,
take this as search pattern:
uint8_t const def_pattern[3] = {0x69, 0x0a, 0xec};
int syncpos = bitbuffer_search(bitbuffer, row, 0, def_pattern, 24) ;
syncpos -=8 ;

or this:
**uint8_t const def_pattern[5] = { 0x69, 0x0a, 0xec, 0x7a, 0xc8 } ;
int syncpos = bitbuffer_search(bitbuffer, row, 0, def_pattern, 40) ;
syncpos -=8 ;

otherwise a lot of good messages will be missing:
3e690aec7ac84313fe8b73001005000005078bfecdb8f8 SID: 9174547
3e690aec7ac84627fd16e600200a00000a0f97fd9b71f8 SID: 1506599
they all have another byte at the end of the UID.
This is NO error !

extracted codes from your big excel list attached

Arad-Excel-list.txt.zip

0 replies

ghost · 2026-02-15T18:26:38Z

ghost
Feb 15, 2026

might be usefull:
https://www.netafim.com.au/contentassets/23e09c1593144653a560133529034ec7/octave-configuration-guide.pdf?v=499325

0 replies

ghost · 2026-02-19T19:37:17Z

ghost
Feb 19, 2026

@avicarmeli ,
I found your Mail , it was marked as Spam .
Im sorry, we are at the point that conflicts with the european data act from 12.09.2025. Be very carefull !
Water is a critical subject in those times.
I dont think Its worth to spend more time about Arad and the Code. Arad dont want to publish more information and we have to respect this.
It is just a hobby for me.
Thanks and have fun.

2 replies

avicarmeli Feb 21, 2026

Thank you for the warning. I deleted the link to the file I share.
It is taking me to add obligatory selection for meter Serial Number in the decoder so it will produce only selected meter data.
I will also add a disclaimer in the decoder docs.
About the ECC part, It make sense that this part is also cryptographic since otherwise people could send faulty consumption transmissions. In that sense I believe that we can conclude our search for ECC/CRC and leave the decoder as is.
The only last thing I will try to do is map the scale factor according to the suffix of the serial.

ghost Feb 21, 2026

https://manuals.plus/m/2c79d702c1a9ab35ef35b9e0d0c9c445c0a609e4e71bffa5e8ed9c9d82dcf090_optim.pdf
Maybe you have this already.
Units are in the Appendix.
Not 100% usefull but a good start.
For Sonata Water the factor is *0.01 If no changes are made with the Arad Master Software.
To enpuzzle this scale factor we need Other
Medium Messages, i.e. Energy, warm water, gasoline..

embaldor · 2026-10-02T19:15:25Z

embaldor
Oct 2, 2026

How can I find out when this is available? It sounds very interesting. Ehud

…

On Fri, Oct 2, 2026, 9:20 PM Benjamin Larsson ***@***.***> wrote: There is code landing soonish for decoding lorawn but it needs the key to decode (I assume). — Reply to this email directly, view it on GitHub <#3414?email_source=notifications&email_token=AVMNJND25BERPSWHPJFVIBT5R7WYRA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCOBXGIYDCMBZUZZGKYLTN5XKOY3PNVWWK3TUUVSXMZLOOSWGM33PORSXEX3DNRUWG2Y#discussioncomment-18720109>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AVMNJNBS6WJ2DTFOG3IFMU35R7WYRAVCNFSNUABFKJSXA33TNF2G64TZHM3TOMBVGYZTSO2ENFZWG5LTONUW63R3HEYTQMRQGYYKC5QC> . Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for iOS <https://github.com/notifications/mobile/ios/AVMNJNFDJSK3MVUFCNAVQAD5R7WYRA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCOBXGIYDCMBZUZZGKYLTN5XKOY3PNVWWK3TUUVSXMZLOOSVGM33PORSXEX3JN5ZQ> and Android <https://github.com/notifications/mobile/android/AVMNJNCCEARKUES34BRPGQT5R7WYRA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCOBXGIYDCMBZUZZGKYLTN5XKOY3PNVWWK3TUUVSXMZLOOSXGM33PORSXEX3BNZSHE33JMQ>. Download it today! You are receiving this because you commented.Message ID: ***@***.***>

1 reply

merbanan Oct 2, 2026
Maintainer

The changes are in 2 or 3 PRs. You can test on your own or just wait until it turns up in the commit log.

Help with new version of Arad water meter (Sonata) #3414

Uh oh!

Replies: 20 comments · 13 replies

Uh oh!

zuckschwerdt Nov 26, 2025 Collaborator

Uh oh!

AryehGielchinsky Nov 26, 2025 Author

Uh oh!

zuckschwerdt Nov 27, 2025 Collaborator

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

merbanan Oct 2, 2026 Maintainer

Uh oh!

AryehGielchinsky Feb 9, 2026 Author

Uh oh!

Uh oh!

AryehGielchinsky Feb 10, 2026 Author

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

AryehGielchinsky Feb 10, 2026 Author

Uh oh!

Uh oh!

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Replies: 20 comments 13 replies

zuckschwerdt
Nov 26, 2025
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AryehGielchinsky
Nov 26, 2025
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zuckschwerdt Nov 27, 2025
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merbanan Oct 2, 2026
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AryehGielchinsky
Feb 9, 2026
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AryehGielchinsky
Feb 10, 2026
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AryehGielchinsky
Feb 10, 2026
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