Features: 1ONE KEY ALARM: This emergency alarm button allows you to achieve a one key alarm to ensure your safety in case of emergency. 2APP CONNECTABLE: The alarm can realize intelligent linkage with other products supported for Tuya, and support smartphone push notifications. 3SMALL AND PORTABLE: The emergency call button is light and compact, easy to carry in the bag, and it is not easy to be found when the button is pressed, so it is very safe. 4MAIN APPLICATION: This button makes it more convenient to call for vulnerable people such as the sick, the elderly, and the disabled who seek help. 5WITH SLING: Our emergency call button comes with a lanyard that you can slip around your hand or put it on your bag.Item Type: Smart SOS Emergency Button AlarmMaterial: ABSPurpose: Make it easier to call for help-seeking patients, elderly, residents ,disabledSupport APP: For Tuya APPWireless Connection: For ZigBee 3.0Working Voltage: DC3VBattery Type: 1 x CR2032 150mAh (built in)Working Temperature: -10-+50Product Size: Approx. 52 x 17.3mm / 2 x 0.7in1 x Smart SOS Emergency Button Alarm1 x Sling1 x Instruction