NOTE According to your APP, choose to purchase a smart temperature switch sensor, There are Tuya APP and Ewelink APP, DS18B20 sensor can only detect temperature,the WiFi Switch must work under 2.4GHz WiFi environment. Tuya Switch Sensor Ewelink Switch Sensor 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 or Tuya/Smart Life. *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 or Tuya/Smart Life 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. *RF Remote control: Turn on/off by 433MHz RF Remote indoors,Only support 433MHz Learning code. Smart Switch Specifications: Input voltage: AC 85-250V Input current: Max 16A Max. Power: 3500W(16A) Wireless Standard: 2.4GHz, 802.11 b/g/n Security Mechanism: WPA-PSK/WPA2-PSK Control mode: Mobile APP Tuya smart / Smart Life/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 Smart Switch Size: 94*57*32 (mm) DS18B20 Sensor Specifications: Type: Waterproof temperature sensor Probe: Stainless steel temperature probe Temperature Measuring Range: -55~+125 Operating Voltage: 3.0-5.5V Weight: 26g Length: 1m NOTE: DS18B20 sensor can only detect temperature, if you need to detect humidity, please prepare your own humidity sensor. Tuya Smart Temperature Switch Ewelink Smart Temperature Switch 1 * TH-16RF Smart Switch 1 * DS18B20 Sensor 433MHz Learning Code Remote Control Please note: The remote does not contain batteries. Only support 433MHz Learning code. I suggest you to buy my remote control, the smart switch does not support rolling code&Clone remotes.