Wired Doorbell for Access Control:  DC12V 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.

- Easy to install,
- No need to replace or install the battery, durable
- Sound clear and soft and soft
- Application: Door Entry Minder, Access Control, Electric Lock System.

Package Contents: 

• Standard Exporting Packing Box