DC Voltage moniroing
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Dan'l B
Jan 26, 2026, 7:27:40 AM (9 days ago) Jan 26
to rtl_433
Has anyone spotted an RTL_433 sensor for monitoring DC voltage (12 VDC)?
Christian Z.
Jan 26, 2026, 8:02:05 AM (8 days ago) Jan 26
to rtl_433
Yes, the [285] bm5-v2 12V Battery Monitor is quite capable.
Careful about the version, it seems newer ones come with BLE.
Also, very annoyingly, the sender transmits once per second.
Christian Z.
Jan 26, 2026, 10:23:22 AM (8 days ago) Jan 26
to rtl_433
My reasoning was: if it comes with a display unit then it uses RF (433 MHz). If there is no display unit then RF is really not needed and might be omitted.
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