How to Replace the battery of the door sensor
1. Use the screwdriver (not included) to open the cover of the door sensor.
2. Remove the battery out to replace a new one.
Battery type: CR1632 cell battery, 3V
Operating Voltage: 3V DC(1* CR1632 battery) Operating current: 3uA(standby), 15mA(Transmitting) Installation gap: ≤ 1cm Working temperature: -15 ℃ ~ 60 ℃ (non-waterproof) Working Humidity: ≤ 85%
Note: Metal will interfere with the signal and shorten the transmission range.
Please place the transmitter in areas away from metals.
Working power of remote control: <10mw
52 chimes to offer,you can choose any ringtones you prefer.if you want to change ringtone,please check below picture.
4 Sound Level from 30DB~110DB to select.
Expandable to multiple smart receiver or transmitter: < up to 50
1* door sensor