Feature: 1. Mobile Phone Remote Push: The emergency alarm device can be connected to a mobile phone to realize remote push and take care of the elderly at home anytime, anywhere. 2. Convenient to Use: When in danger, the elderly can press the SOS transmitter, and the signal will be sent to the mobile phone. 3. Detect Human Movement: Intelligently associated with the for ZigBee infrared sensor, one click execution, detecting human movement at any time, and real time detection of outsider intrusion through App notification. 4. Super Loud Sound: Attractive buttons with super loud sound make it more convenient for patients, the elderly, residents, and disabled people to call for help at home. No need to yell to get someone's attention. 5. Detect Smart Home Devices: DIY smart link to smart home devices, and detect smart home devices such as light bulbs, switches, valves and other connected devices through APP. 6. Portable Design: The SOS call button is easy to carry and can be carried in a pocket, hung around the neck, attached to the wall, etc. Specification: Item Type: Smart Emergency Button Material: ABS, Silicone Color: As Pictures Shown Weight: Approx. 35g / 1.2oz Transmit Power: 10dBm Emission Current: Peak 45mA, Average 1~2mA Quiescent Current: 2~3uA Launch Distance: More Than 100m / 109.4yd (Open Space) Wireless Frequency: for ZigBee 2.4GHz Working Temperature: -20℃-60℃ Working Humidity: ≤95%RH (Non Condensing) Product Size: Approx. 4.5x1.5cm / 1.8x0.6in Battery: CR2032 Button Battery 150mAh (Included). Package List: 1 x Button 1 x Manual1 x Card Pin