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Feature: 1. Advanced RF Wireless Technology: Our restaurant beepers utilize edge RF wireless technology, supporting 99 channels and allows for code learning and flexible combination. Fashionable design and convenient to use. Specification: Item Type: Restaurant Pager System Receiver: Working Frequency: 433.92MHz Battery Type: Li Battery Receiver Battery Capacity: 300mAh (included) Working Current: 100±20mA (Vibration + Buzzer Mode), 75±10mA (Vibration Mode) Standby Current: 10±5mA Receiver Sensitivity: -107±2dBm Decoding: Learning Code Waterproofing Grade: IPX4 Working Temperature: -20℃ to 60℃ Transmitter: Working Frequency: 433.92MHz Battery Type: Battery 23A 1 piece Battery Capacity: 60mAh (included) Transmission Current: 10mA±3mA Standby Current: <1uA Open Distance: >800m Click Keys: 1 million times Waterproofing Grade: IPX4 Working Temperature: -20℃ to 55℃ 4 Keys: A, B, C, D Package List: 4 x Receivers |