How to work of wireless calling system

When the guest need any service, they can press the button on the table, the table number will be showed on the RECEIVER of watch or display screen with clear “dingdong” sound or vibration. So the waiter could offer service very timely.

Specification of display screen

1. With high strength ABS shell
2. Desktop or wall mounted 
3. Show one group number and 3-digit number. 
4. Show different service type with red dot (1 dot =Call, 2 dots =Bill, 3 dots =Drink )
5. It can work with 999pcs call buttons in max
6. It can save 63 calling info in turn and apply in basic service place.
7. Can connect computer if you need.
8. Dimension: 195*135*30mm
9. Color: Black and White
10. Output: DC7.5V

Specification of waiter pager 

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 Lithium battery
10. Dimension: 70*42*16mm
11. Color: Red and Black
12. Output: DC5V--1A

Specification of table call button

2 key: Call, cancel                                                 
Signal Distance: 200M in open area     
Material: PC  
Dimension: 60*60*20mm    
Color: white; black shell                              
With a 12V 23A battery
Any language any logo is acceptable