HY-2610N3 is 3-key wireless transmitter, used for transmitting table numbers to receiver.   With stand to insert manual or advertisement

Features:
1) The service button can be located on the table, if guests need service,
just push the service key, if check out, press the bill key, then the waiter
can receive the request messages by numeric pager or monitor system

2) Wireless products, no wiring involved. The buttons are 3AAA battery operated.
The button's number can be defined if needed
3) Applications: tea or coffee house, spas and salons, health and fitness
clubs, restaurants, hotel, conference rooms, executive dining rooms,
saloon, nightclubs, bowling alleys, massage house, churches, casinos,
golf and country clubs, hospitals, health clubs, and offices
Product parameters:
1) Transmitting frequency: 433.500MHz
2) Coverage: 500 meters (in open area)
3) Power supply: three no. 12 batteries
4) Antenna mode of the button: inside
5) Responding speed: <1s
6) Color: black color