YC-C double page interphone system: on the based of B type, it has the functions of interphone, hand free, monitor, receiving the outside phone and page.  

Type and function:

Main component: 1. main phone      2. extension  

Option: 1. emergency extension     2. corridor indication screen   

Remark: all the types can have the emergency extension and purchase more extension calling wires (extension options) 

Functions: 1、Interphone: extension and main phone can be called each other and communicate as well.

2、Unending calling: whenever if there is a call, it can be connected.

3、Calling storage: when the extension calls the main phone, if the main phone has no answer or is working, the main phone will automatically store the extension no and indicate.

4、  Emergency calling: when the emergency extension calls, all the extensions can be paused.

5、  Scan function: it can check up the room lamp setup and memo setup.

6、Monitor function: it can monitor any patient in any sickbed.

7、Hand free function: push the hand free function on the main phone, the call can be received or call the extension without picking up the main phone.

8、Telephone function: it can receive the outside normal telephone. When there is an extension calling, the phone has the notice sound and receive the extension calling or directly to call the extension.

9、Clock function: it can show the time and the calendar. 

10、Main phones multiple function indication: main phone can indicate the calling order, bed no, time, calendar and LED.

11、Corridor indication screen: indicate the calling situation of the extension in time. When there is no calling, it indicates the time.

12、Automatically examination function: exam the system automatically.

13、Easy installation: main phone and all the extensions, corridor indication screen just use the two normal soft wires, no polarity, parallel connection.  

I type corridor indication screen	II type corridor indication screen
I type corridor indication screen with clock	II type corridor indication screen with clock
Outer installed extension	Inner installed extension