1、STACKED CHARGING: Restaurant pager uses stacked charging, a charging stand can support up to 20 pagers, space saving, easy to operate, built in battery, battery standby 48 hours to prevent overcharging. 2、MULTI FUNCTION: Restaurant call button uses millions of groups of codes to prevent adjacent paging systems from interfering with communications, tuned by repeaters, the keyboard is both a transmitter and receiver, receiver capacity of 999. 3、TOUCH CONTROL: Restaurant waiting buzzers with full touch keyboard version of the system, touch to turn on or off, faster, easier and more convenient to integrate infrared code to program and set up the pager. 4、DURABLE HOUSING: Restaurant alert button features a modern and elegant design with smooth contours, water and drip resistant, ultra slim and compact rubber edges for drop protection, and the thinnest thickness of only 11mm/0.43in. 5、BUILT IN BATTERY: Restaurant buzzer can talk without an adapter, features a burglar alarm system with a range of 1500m/164yd (open air), and has a quick set up feature to quickly and easily change the pager's number. Item Type: Restaurant Pager Material: PC Receiver with Built in Battery: 10 x 200mAh Battery Keyboard: Wireless Code: 1527 Operating Current<220mA Standby Current <35mA Operating Frequency: 433MHz Receiver: Operating Frequency: 433MHz Operating Current<125mA Standby Current<15mA 10 x Disc Receiver 1 x Charging Base 1 x Power Adapter 1 x Charging Cable 1 x Keyboard 1 x Signal Bar 1 x Power Cord 1 x Instruction Manual