How it work of patient call bell 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 Nurse call system smart watch

Hang on the neck
1. Can work with 500pcs multi-key transmitter in max
2. Can show 3 group call number in one time 
3. Show 4-digit number from 0001-9999 and first alphabet can be A-Z
4. Can indicate different service type via words or alphabet. 
    ( call; bill; drink; dessert; help etc and A-Z)
5. Can record when the calling come in and count the call times of each number 
6. Can track the history of calling info by up and down
7. Show current time when stand-by
8. 3 reminder ways: sound prompt and vibration or both 
9. Battery is rechargeable: 3.7V Lithuim battery
10. Dimension: 70*42*16mm
11. Color: Red and Black
12. Output: DC5V--1A

Nurse call system led display screens need work with wireless transmitter