K3 GSM Alarm System with elderly Care and Temperature Alarm Brevity,Fashion,Neat design; LCD display current time, which detector activated, indoor current temperature; Supports temperature higher or lower than preset value alert function; Big SOS Button easy to push it; High quality of voice communication; Supports 6 preset call numbers for SMS or Call or both; Supports monitoring senior get up bed in time or not; Supports wireless fall down detector; Supports total 16 wireless detectors or SOS buttons; Supports free charge to Arm/Stay operation; Inbuilt rechargeable battery inside; Easy to use, no need to train; Easy to installation, can put on desk or onto wall. Smart Phone APP configuration.