Note: The Sonoff Sensor DS18B20 must work with the Sonoff TH10 or TH16, can"t work alone, and Sonoff TH10 or TH16 is not included. Overview: Sonoff is a universal switch for your smart home system to remotely and automatically turn on or off any appliances by phone APP. When the temperature of the environment falls within the range, it will automatically turn on or off the connected devices. It also supports timing turning on or off the appliances and supports presetting the range for temperature. Work with the Sonoff TH10 or TH16, you can make your home smarter. Features: xApp Support: Free iOS and for Android mobile App eWeLink. xSync Status: Realtime device status provided to App. xRealtime monitor: Monitor realtime temperature. xRemote ON or OFF: Turn electrical devices on or off from anywhere, with high accuracy temperature waterproof DS18B20 sensor. xShare Control: Control your smart home together with your family. xTiming: Supports 8 enabled countdown or single or repeat timing tasks to turn on or off at specified time. xAuto Mode: Set Auto mode to turn on or off at a specified temp. or hum. range. xManual Mode: Set manual mode to turn on or off immediately. xTrigger Smart Scene: The temp. or hum. values work as smart scene trigger conditions to trigger on or off other Sonoff devices. xVoice Control: Works perfectly with Alexa, for Google Home, for Google Nest. xWaterproof temperature sensor with stainless steel temperature probe, high accuracy, wide usage in daily life. DS18B20 Sensor Specification: Type: Waterproof temperature sensor Probe: Stainless steel temperature probe Temperature Measuring Range: 55 celsius and125 celsius Operating Voltage: 3.05.5V Weight: 26g Length: 1m Package Information: Package Size: Approx. 9x4.5x2cm or 3.54x1.77x0.78in Package Weight: Approx. 26g or 0.92oz Packing List: 1 x DS18B20 Sensor Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.