Note: The TH-16?Smart Wifi Switch does NOT have 433Mhz RF receiver module. If you want RF function, please buy RF TH-16 Wifi Switch.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 "AMAZ0N" 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 85-250V?Input current: Max 16A?Max. Power: 3500W(16A)Wireless Standard: 2.4GHz, 802.11 b/g/n?Security Mechanism: WPA-PSK/WPA2-PSKControl mode: Mobile APP EWeLinkPlatform: for Android, iOSGang: 1Support temperature sensor: DS18B20 (not support humidity sensor now)Enclosure Material: Fire-retardant ABS V0Humidity: 5%-90%RH, Non-condensingOperating Temperature: 0oC-40oCTH-16 Smart Switch Size: 94*57*32 (mm)DS18B20 Sensor Specifications:Type: Waterproof temperature sensorProbe: Stainless steel temperature probeTemperature Measuring Range: -55~+125Operating Voltage: 3.0-5.5VWeight: 26gLength: 1mPackage Information:Package Size: Approx. 15*12*4cm / 5.9*4.7*1.6inPackage Weight: Approx. 100g / 3.5ozPacking List1 * TH-16 Smart Switch1 * DS18B20 Sensor