dnd doorbell switch

الوصف

Item:dnd doorbell switch

(High voltage**0V) doorbell switch:Don't need to use together with whole system,and can use  independently.That is mean you can directly connect it to **0 Power source wire,because its voltage is **0V. 

Function and Feature: 

1.Can display The number of hotel room ,Do not disturb , and so on.Match a doorbell to use together.

2.Can press the doorbell(It is Weak electricity *2V).

3.It can show the information of whether have customer stay in PC machine.

4.Its background light of keystroke is blue,it is easy to distinguish.

5.Adopt the technology of control weak electricity respective,it is safe and environment-proof,and it is easy to install

6.The shape of frame and the drawing of keystroke can produce as customers request.