Feature:1. 30 Pagers: This customers pager system contains 30 pagers and 1 keypad call, you can always add more pagers to the system as your business grows.2. 3 Prompt Modes: This restaurant pager system provides 3 prompt modes, including vibration, sound and flash that can be freely switched.3. Wide Application: This pager system is suitable for fast food restaurants, food courts, pizza parlors, churches and auto shops or other places.4. Long Receiving Distance: This wireless calling system provides 50 to 100 meters/164 to 328ft receiving distance among wall, maximum 800 meters/3280ft in open area.5. Rechargeable Battery: Each pager is designed with inbuilt rechargeable battery, with indicator of low battery and charging, offering more convenience.Specification:Item Type: Customers Pager SystemMaterial: ABSReceiver:Working Voltage: DC3.7V (Rechargeable Battery)Charging Voltage: DC5VOperating Frequency: 433.92MHzStandby Current: 105mAWorking Current: 7510mAReceiving Sensitivity: Minus 1072dBmBattery Type: Lithium BatteryBattery Model: 502030Battery Capacity: 200mAh (Inbuilt Battery)Decoding Mode: StudycodeTransmitter:Working Voltage: DC5VOperating Frequency: 433.92MHzWorking Current: 20030mAStandby Current: 6010mAEncoding Method: StudycodeSize: Approx. 120 x 80 x 30mm / 4.7 x 3.1 x 1.2in ( Manual Measurement, Slight Error May Exist )Operating Temperature: Minus 10 to 60.Package List:1 x Power Adapter1 x One for Three Power Adapter1 x Transmitter30 x Receiver1 x User Manual3 x Charging Base