Inspection
1.
Check that the red light flickers when the door lock or unlock button is pressed on the transmitter.
2.
Remove the battery (A) and check voltage if the red light doesn''t flicker ...
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 ...