Other information:
Specification
ItemSpecificationRated voltageDC 3VOperating voltageDC 2.7V ~ 3.3VOperating temperature-20°C ~ +60°C (-4°F ~ +140°F)RF ModulationFSKLF ModulationASKRF frequency433.92 MHzBatteryCR2032 (3V / 1EA)Transmissible distance30m or moreBattery lifetime2 years or more (at 20 times per d ...
Inspection
1.
Troubleshooting for Speaker
(1)
Basic inspection of speaker
Inspect the sound from speaker after verifying that the
speaker mounting screws is removed and the wiring connector is connected
precisely to remove vibration transmitted from body trims and
surrounding parts.
...