Specification:
Transmitter working voltage: ≤ 3.7V; Low power consumption of transmitter: ≤10mw
Receiver working voltage: AC90-260V 50Hz; Tone adjustable range: 25-100dB
Working Frequency: 433MH; Transmitter Battery: 150mAh (polymer lithium battery)
Installation Method: 1. Take out the indoor unit from the package, and connect the indoor unit to a voltage between 90-260V; just press the ringtone switch button and the volume adjustment. 2. Install the outdoor unit at a selected location, installation method ① double-sided adhesive; method ② screws
Range of use: Wireless doorbell suitable for residential buildings, factories, construction sites, office buildings and other environments. Wireless distance within 300 meters.