3-Digit Display with Keyboard Wireless Queue Management System

1. Introduction:
This Calling System is mainly used in fast food restaurant, cantee, clinic, hospital and so on where there are a lot of customers waiting for his or her service. They system consist of a transmitter (Numerical Keypad)for the caller and a receiver for the one who will be called. When the callers are ready for offering service, he or she just press the number on the keypad to send an ID to the pager. And the people holder the pager will know the information that the dishes or the service are ready to be offered and take it at earlier time.

2. How does the system work?
Customer give order to counter; Counter take order and give customer a Q number. Customer wait somewhere for order. When Order ready. For example No. 999's order is ready. Counter can press 999 + "ENT" key from K-999 Then K-302 receiver will display the number 999 on the screen with dingdong sound. Customer will see the display number and go collect food.

3. Specification

Specification of Transmitter K-999B:
1. With high strength ABS material cover
2. Using digital code technology
3. It can call 999 persons
4. It have 4-digit number
    first digit show zone number and last 3-digit number show current number
5. With Clear, Next, Reset function

Technical parameters:
Signal Range: >100m in open area
Working voltage: DC7.5-12V
Working current: <20mA
Dimension: 86*86*20mm
Color: black, white


Specification of display of K-302:
1 With high strength aluminum alloy shell, durable in use
2 Use digital code technology and the function is steady and reliable
3 Show 3-digit number from 001-999
Technical parameters:

Working voltage	DC12V~18V
Working current	<20mm
Working Frequency	433.92mhz
Size	220*120*40mm