NOTE:DS18B20 sensor can only detect temperature, if you need to detect humidity, please prepare your own humidity sensor. If you need Extension cable , please click below picture to buy . Overview: This item is a universal switch for your smart home system to remotely and automatically turn on/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/off the appliances and supports presetting the range for temperature. Work with the TH-16 Smart Switch and the waterproof DS18B20 sensor, you can make your home smarter.Features: *App Support: Free iOS and for Android mobile App eWelink. *Sync Status: Real-time device status provided to App. *Real-time monitor: Monitor real-time temperature. *Remote ON/OFF: Turn electrical devices on/off from anywhere, with high accuracy temperature waterproof DS18B20 sensor. *Share Control: Control your smart home together with your family. *Timing: Supports 8 enabled countdown/single/repeat timing tasks to turn on/off at specified time. *Auto Mode: Set Auto mode to turn on/off at a specified temp. range. *Manual Mode: Set manual mode to turn on/off immediately. *Trigger Smart Scene: The temp. value works as smart scene trigger conditions to trigger on/off other eWelink devices.*Voice Control: Compatible with Amazon"Alexa, for Google Home, for Google Nest. *Waterproof temperature sensor with stainless steel temperature probe, high accuracy, wide usage in daily life. TH-16 Smart SwitchSpecifications: Input voltage: AC 85-250VInput current: Max 16AMax. Power: 3500W(16A) Wireless Standard: 2.4GHz, 802.11 b/g/nSecurity Mechanism: WPA-PSK/WPA2-PSK Control mode: Mobile APP EWelink Platform: for Android, iOS Gang: 1 Support temperature sensor: DS18B20 (not support humidity sensor now) Enclosure Material: Fire-retardant ABS V0 Humidity: 5%-90%RH, Non-condensing Operating Temperature: 0C-40C TH-16 Smart Switch Size: 94*57*32 (mm) DS18B20 Sensor Specifications: Type: Waterproof temperature sensor Probe: Stainless steel temperature probe Temperature Measuring Range: -20~+100 Operating Voltage: 3.0-5.5V Weight: 26g Length: 1m Package Information: Package Size: Approx. 15*12*4cm / 5.9*4.7*1.6in Package Weight: Approx. 100g / 3.5ozPacking List: 1 * TH-16 Smart Switch 1 * DS18B20 Sensor