1With optional 36 ringtones, users can choose any one as doorbell ringtone according to their needs. 2Can flexibly add or remove the receiver and transmitter to meet their needs. 3The pairing method is simple and easy to operate. 4With the memory function, the ringtone that has been set can be locked by memory after power failure, so that keep the previous ringtones after power on. 5The working distance is up to 300m/984.25ft in an open and unobstructed environment. 6Can achieve remote control, which has stable signals and no interference with each other. 7There are 4 levels of volume that can be adjusted from 0 to 100 decibels. 8Unique mute and interference-free mode, giving users a better home experience. 9With the function of waterproof, can work normally even in rainy or bad weathers.
