Wireless Calling System advantages: Save labour cost Improve service image Most important, improve efficiency How to use the wireless calling system: First, the calling buttons are pasted or put on the wall or on the table, when the guest have any service, he or she press the calling buttons, the receiver (LED screen or watch pager) will get signal with vibration or sound, showing the table number, then the waiter will know which table to be served. Advanced microcomputer processing technology and high sensitivity superheterodyne receiving technology, with a high cost percompatible withmance; Intelligent startup self-test technology;Compatible with 1/2/3/4/ keytransmitter and keyboard pager; Electronic volume control; Multiple groups of call incompatible withmation can be stored. Two display modes of call incompatible withmation: cyclic display and fixed display; Double backup technology can prevent the phenomenon of call code loss and code hopping; Time display, voice broadcast prompt; High brightness full screen display,eye-catching and intuitive;The appearance of fashion atmosphere noble and elegant; This machine has excellent functions, widely used in Chinese and Western restaurants, bars, internet cafes tea houses, cafes, leisure clubs,sauna centers, KTV chess and card rooms, hospitals, nursing homes. sanitarium,banks,schools,factories, hotel rooms, enterprises andinstitutions, and building residentia and other places of call services. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Plug Type: EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Voltage: 110-240V Color: red Material: Plastic Package Contents: 1 set Wireless Calling System Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.