Model Number: ZJ-46 Brand Name: CallingSYS Key Specifications/Special Features: The receiver server uses RF wireless and learning code technology. It can pair up to 999 wireless calling transmitter and 1 management remote controller. And the receiver host adopts advanced micro processor and high-sensitivity superheterodyne receiving technology which make the products very stable. Also it has adjustable voice prompt, different calling records display, and LED digital display functions.The wireless calling system has millions of different code which can be paired easily and freely. And it is widely used in restaurant, café, bar, tea shop, KTV, bank, office, factory, hotel, hospital and so on.This receiver host can read number 1 to 999, and also can distinguish the room number and desk number (bed number in hospital).Technical data Working frequency433.92MHz Working voltage DC9V/1A power supply Standby current 60mA Working current 600mA Decoding mode Learning code Modulation AM Receiving sensitivity -110dBm Working temperature -10℃~+50℃ Product size 200*123*25mm