4G SOS emergency alarm kitDC5V 1A power supply for the host, with 500mAh backup batteryWirel433 connection: supports up to 20 sensors, 10 SOS buttonsPreset 3 phone numbers, equipped with 3 separate call buttonsOne-touch dialing of all preset contactsAlarm SMSTwo-way hands-free callingAutomatically answer calls from preset contactsVoice activationNo motion alarm - Elderly care (need to use presence sensor)Doorbell function (need to use doorbell button)Low battery warning and emergency pull cordUltra-light waterproof SOS button with lanyard and built-in 3V/CR2032 buckle batteryApplication scope: home, hospital, nursing home, retirement home, etc.Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so onVoltage: DC5VColor: WhiteMaterial: plasticPackage Contents:1 x Rescue Call Host2 x SOS DevicesOnly 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.