Simple queue system transmitter

How small queue manage systemworks? 

1. Customer go to the Service station and take a number ticket by Thermal printer or ticket dispenser
2. Customer wait for their service. 
3. When it is their turn, the counter worker will press next to call.  
4. The customer's number (start from 001 or A01 or 01)  will show on the display screen with prompt sound, so that customer know which counter they should attend.then press next again, number will goes to next number. if press LAST, number will goes to last number. 
5. Applications: Restaurant, Coffee Shop, Fast food Chain, Food Court, KTV, Pub, Service Centre, Clinic, Supermarket.Provides fair, organized, efficient customer service  

 K-GSN3 queue call button specification : 

3-key: LAST, RECALL, NEXT                                                   
Signal Distance: 200M in open area     
Material: Acrylic+waterproof silicone  
Dimension: 110*55*30mm   
Color: Transparent with Black/Silver screen
With two 12V 23A battery

queue call system wireless button need work with queue display 

Applications:
Tea or Coffee House, Restaurants, Hotel Conference Rooms, Executive Dining Rooms, Spas and salons Health and Fitness clubs, Hospitals Health Clubs, Offices Massage House, Nightclubs, Bowling Alleys, Churches, Casinos, Golf Country Clubs, Bank, Medical Clinic, Fitness center, Chess and card room, Relaxation club, Kitchen, Confinement center, Super Market, Church