DingDong Bell

Product features:
Stylish appearance with light touch design
Easy and convenient installation
Ultra Low-power electronics, power saving and durable use
52 polyphonic ringtones optional
4-level optional volume adjustment
technical parameter
Working voltage AC 90~250V Working frequency 433.92 MHz+-280 KHz
Power consumption 10 mW Transmission power 0dbm
Sensitivity -110dbm net weight 92G
Volume 10-110db Size 81 * 81 * 20mm
The indoor Dingdong machine is directly plugged into the socket at home and does not require a battery. Its function is that when the outdoor doorbell rings, the tinkling machine on the door will sound. The matching is achieved through the matching code between the doorbell and Dingdong, just like the Bluetooth function of the phone