Feature:1. RF Wireless Technology: RF wireless technology, stable system, long wireless receiving distance, 30 level digital control volume adjustable2. Support 400 Pagers: Wireless guest pager display receiver supports 400 pagers, supports single button or 4 button pagers3. Named Call Button: Restaurant wireless paging system can name the call button starting with ABCDEF letters, and can display the time, year, month and day4. Reliable and Stable: Wireless guest pager adopts advanced micro processing chip to make its performance stable and reliable, call button word can be selected, single or list display mode5. Applicable Scenarios: Used in various places such as homes, hotels, bars, restaurants, factories, workshops, tea houses, clubs, bowling alleys, massage rooms, churches, country clubs, hospitals, health clubs, and officesSpecification:Item Type: Restaurant Pager SystemMaterial: ABSDisplay Receiver Parameters:Operating Frequency 433.92MHzMaterial: ABSWorking Current: <130mAStandby Current: <550mAModulation Method: ASKReceive Sensitivity: Better Than -105dBDecoding: Learning to CodeWaterproof Grade: IPX4Working temperature:-20 to 60Button Launcher Parameters:Operating Frequency 433.92MHzMaterial: ABSBattery: 2 Built in CR2016 Button Batteries (Included)Battery Capacity: 80mAhEmission Current: 10mA3mAStandby Current: <1uAOpen Distance: >200metersKeystrokes: 1 Million TimesWaterproof Grade: IPX4Working Temperature:-20 to 55Four Keys: Call, Checkout, Order, Cancel.Package List:1 x Display Receiver40 x Button Launchers40 x Film1 x User Manual1 x Adapter