Wifi Sos Button Smart Wireless Sensor Alarm. Features: Tuya Smart Wifi Emergency Button One-key Alarm Call for Help Button for the Elderly, Intelligent Scene Linkage One-click Help to Prevent Accidents Push to Mobile Phone Through Home WIFI Define Scenario Working Mode Link Alarm or Call for Help The Product Can Be Used Alone. It Can Be Connected to WiFi to Realize Remote Push. Take Care of the Young and Old at Home Anytime, Anywhere Specifications: Operating Temperature: -20-60 "C Emission Frequency: 100dBm Quiescent Current: 2 ~ 3uA Operating Humidity: = 95% RH (non-condensing) Emission Current: Peak Value45mA.average1-2mA Package Included: SOS Emergency Button*1 Lanyard*1 Double-sided Sticker*1 Accessory Pin*1 Manual*1 . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.