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NineLeaf Multifunction Welcome Warning Greeting Wireless Doorbell PIR Motion Detector Sensor

Motion detector doorbell is an intelligent security device with remote monitoring, sensitive detection, intelligent alarm and energy-saving design, applicable to a variety of places.

Parameters:
Battery life: 5-7 months (calculated by 30 times per day)
Volume: 80-96db (track difference)
Working frequency: 433.92MHz
Operating ambient temperature: Receiver:-10°C - 60°C
Infrared detector: -10°C - 33°C
Working environment humidity: ＜ 80 % Storage temperature: -20°C - 70°C

Low battery indication:
1) When the infrared curtain battery is low, the LED flashes once every 3 seconds.
2) When the receiver battery is low, a low-battery sound is heard when switching on or changing modes. Please replace the batteries in time, otherwise the receiver will lose all its functions.
3)When the indicator light of the remote control becomes dark or the remote control distance is very short, please replace the batteries in time.