1、Professional Processing Chip: Coaster paging system adopts high performance noise reduction coding and decoding circuit, fast heat dissipation and high stability. 2、Multifunction: Low battery indicator, charging indicator, learning code registration mode, online search, vibration, sound, light flashing, switchable prompts at will, maximum support 20 pagers. 3、Working Distance: The external antenna receives 50 to 100 meters across the wall, and the open area working distance is about 1000 meters (3280 feet). 4、Included Kit: Pager system includes a 20 channel call keypad transmitter, and 10 pagers. 10 different codes can be sent through the combination of numbers 1 to 10, improving work efficiency. 5、Widely Used: Pager system is widely used in fast food restaurants, food courts, pizza stores, churches and car stores or other places where there are many guests waiting to be served. Item Type: Wireless Calling System Material: ABS Keyboard Transmitter: Operating Frequency: 433.92MHZ Operating Current: 200±30mA Standby Current: 60±10mA Coding Mode: Learning Code Operating 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, Buzzer) Receiving Sensitivity: -107±2dBm Battery Type: Lithium Battery Single Receiver Battery Capacity:200mAh (Included) Decoding Mode: Learning Code 1 x Keyboard Transmitter 10 x Receiver 1 x User Manual 1 x Adapter