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High Quality DC12V Electronic Door Bell For Door Access Control System B08

Here is a high quality electronic door bell can connect with access control keypad which has door bell button, sound is ringing and the volume is high, power on by access controller, no need additional battery, also you can connect extension cable and installed at any place you like.

(1)Use: Access control system
(2)Power: DC12V, no need battery.
(3 ) 3 tones optional .
(4)Size: 86 x 86 x 23 mm

4 wires connection
1)Red:+12VDC 
2)Black :GND 
3)Yellow :Door Bell
4)Green : Door Bell

Package:
Weight:01KG
When Yellow and Green short circuit, Doorbell will sound Ding Dong. 

Application
Door Entry Minder 
Access Control 
Electric Lock System. 

Packing list
1* 12VDC Wired Door Bell