Product introduction: 1, 433MHz home remote control digital LED wireless doorbell induction doorbell
2, 3 level volume adjustment 38 music;
3, no mercury and lead, and ultraviolet light, green energy to protect the earth from zero pollution;
4, the installation of a simple sensor should be installed at a height of about 2 meters, the receiver can be plugged in
5, built-in dual speakers, clear sound, especially suitable for home, office, factory, store, security, welcome, etc.

1, the receiver working voltage: 110-240V
2. Transmitter operating voltage: 4.5V (3 batteries and 7 batteries are not included)
3. Receiver button:
1) Music: 38 music options, side music logo buttons to adjust
2) Volume: three-speed volume adjustment (high, medium, low) side volume indicator button to adjust
3) Can be set with sound and no sound (with sound: sound + indicator silent: indicator light)
4, working distance: up to 70 meters
5, transmitter sensing distance: 3-7 meters