1 no wiring, easy installation
2. remote, open up to 70-110M
3. high frequency vibration, strong penetrating ability
4.32 5.
music ring tones in the music sounded, and flashing LED lights.

6. a variety of styles to choose.

Product Name: crystal Wireless Flash doorbell
product specifications:

receiver: 2 batteries of 5

launcher: 1 12V23A batteries (included)

frequency: 315Hz
number: 60/ box

usage: install the battery, pull the switch to the selected audio receiver (double arrow) position (each time for transmitting a ringtone, if you want to fix a piece of music, will pull the switch to position sound (music symbols) can be fixed

notes

. installed the doorbell should not be close to the metal objects, so as to avoid the influence of magnetic field effect of metal bell ;

. And the doorbell button using the same frequency encoding used, do not use non paired button operation;

. Not a doorbell or a button is mounted in the sun and rain;

. Try to use high quality alkaline batteries, and regularly check whether the battery leakage and corrosion circuit board