wireless calling system

Product Description: HY-2610Y is wireless transmitter, used for transmitting table numbers to receiver. Features: 1) The requester can be located on the table, if guests need service, just push the service button, then the waiter can receive the request messages by numeric pager or monitor system. 2) Wireless products, no wiring involved. Use 12V battery to supply power. 3) The dark part is made by POM material, not easy to be broken and traces on the surface can be avoided. The CALL button is made by the silica gel material, comfortable feel, waterproof and damp proof. 4) Applications: Tea or Coffee House, Spas and Salons, Health and Fitness Clubs, Restaurants, Hotels, Conference Rooms, Executive Dining Rooms, Saloon, Nightclubs, Bowling Alleys, Massage House, Churches, Casinos, Golf and Country Clubs, Hospitals, Health Clubs, Offices, etc. Product Parameters: Product Type: HY-2610Y Color: Black Dimension: 6.5*6.5*1.5 CM Weight: 0.05KG Transmitting Frequency: 433.500MHZ Transmit Power: <10mw Transmit Distance: 300m (open air) Power Supply: one 12V battery