How it work of wireless calling system

Hospital nurse call system is widely used in hospital;clinic;elder home and so on. It consist of button for patient use and signal receiver for nurse or doctor use. When the patient need any help, they just press the button, the bed number will be showed on the RECEIVER of display screen with “dingdong” sound. So the Nurse and doctor could offer help very timely.

Specification of patient call button

1 key: Call                                                                                                                                  

Pull cord to call and press button to cancel                                     

Signal Distance: 200M in open area   
Material: PC 
Dimension:80*80*10mm
wall-mounted installation                                
With a 12V 23A battery

Wireless call button need work with signal receiver