Features:  This WIFI switch controller use AC 85V - 220V (up to 250V) wide voltage max. 10A power supply to output the switch signal, it can control the range of temperature and humidity to achieve the automatic control of your home appliance and monitor the temperature and humidity.  Constant temperature and humidity control.  Jog, self - locking dual mode.  Share function.  Timing function.  Time delay function.  Phone APP automatic or manual mode control.  Phone APP automatic mode: controll by setting the maximum temperature and minimum temperature.     Application scene:  Electric fireplace; electric heater; carbon crystal heating; electric warming fan; electrical oil heater; greenhouse; etc.     Temperature and humidity sensor specifications:  Measurement range:  Temperature: -40 - +80 degree.  Humidity: 0 - 99.9%RH.  Accuracy(in 25 ): Temperature: ±0.5 degree.  Humidity: ±3%RH (10...90%RH).  Sensor type:  Temperature: resistive transducer.  Humidity: capacitive transducer.  Working temperature range: -40 - +80 degree.  Plower supply: DC 3.1-5.5V.  Output: digital (1 wire).  Case material: ABS.     Package included:  1 x WIFI Switch Controller.  1 x Temperature And Humidity Sensor (Cable Length: about 40cm)