Features 1、999 Channels: The Wireless calling system includes a 999 channel call keypad transmitter and 10 pickup discs. 999 different coding can be sent via a combination of numbers 0 to 9, improving work efficiency 2、Convenient and Practical: Receiver is with power indicator, charging indicator, learning coding registration mode, online search, vibration, sound, light rotation, can be switched at will to prompt, the maximum support for 999 discs 3、Scope of Application: Wireless pager systems are used in fast food restaurants, pizza stores, churches and car stores or other places where there are guests waiting for service 4、Professional Chip: Restaurant calling pager system adopts professional processing chipset, high performance noise reduction coding and decoding circuit, fast heat dissipation and high stability 5、Work Distance: Restaurant pager external antenna wall receiving distance of 50 to 100 meters, open area working distance of about 1000 meters (3280 feet) Specification Item Type: Wireless Calling System Material: ABS Keyboard Transmitter: Operating Frequency: 433.92MHZ Operating Current: 200±30mA Standby Current: 60±10mA Coding Mode: Learning Coding Working Temperature: -10℃ to 60℃ Disc Receiver: Operating Frequency: 433.92MHZ Standby Current: <14±3mA Operating Current: 70±20mA (buzzer) 100±20mA (vibration) 120±20mA (vibration and buzzer) Receiving Sensitivity: -107±2dBm Battery Type: Lithium Battery Single Receiver Battery Capacity: 300mAh (included) Decoding Mode: Learning Coding Package List 1 x Keyboard Transmitter 10 x Disc Receiver 1 x User Manual 1 x Adapter