Model Number: ZJ-22C Brand Name: CallingSYS Key Specifications/Special Features: Wireless lamp receiver is installed on the top of the door of each hospital room, when some one needs help, just press the emergency button, corresponding color lamp will be on or flicker, for example, common call, red light on, emergency call, blue light flicker and siren, this is widely used in hospital, old folk’s homeWireless calling system has millions of different code which can be paired easily and freely and widely used in hospital and nursing homeTechnical data: Working voltage12V DC/1A (power adapter) Working frequency 433.92MHz Standby current 10mA±2mA Working current 138mA±10mA Receive sensitivity -100dBm Decoder mode Learning code Modulation AM Color White Dimensions 68*68*98mm