Keep an eye on your children safety, it will remind you when children open the door/window and sneak around.
It is perfect for elderly use, will notice you when they get out or come back home
There are 52 ringtones to choose for your store,and it is a great choice inform you when customers enter or leave.
It is easily let you know when someone enter the door, even if you are not in the reception area.
4 Volume sound level and four "ding dong" ringtones are optional.
1. Use the screwdriver (not included) to open the cover of 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%
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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 | 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 Voltage: 110V | 1* receiver 2* door sensors 2* tapes 1* manuel |