Note: The TH-16 Smart Wifi Switch does NOT have a 433Mhz RF receiver module. If you want to use RF function, please purchase TH-16 Wifi RF Switch. Overview: This item is a universal switch allowing your smart home system to remotely and automatically turn on/off all appliances by phone APP. When the environment temperature is within the range, the connected devices are automatically turned on or off. It also supports appliance on/off timing and allows preset temperature range. Work with TH-16 Smart Switch and DS18B20 Waterproof Sensor to make your home smarter. Features: * Support for Apps: Free iOS and for Android mobile app eWeLink. * Sync Status: Real-time device status provided to App. * Real-time Monitor: Monitor temperature in time real. * Remote On/Off: Turn on/off electrical appliances from anywhere, with a high-precision, temperature-resistant waterproof DS18B20 sensor. * Share control: Control your smart home with your family. * Timing: Support 8 countdown/single/repeat timing tasks enabled to turn on/off at a specified time. * Auto Mode: Set up the mode automatic to turn on/off at a specified temperature. interval. * Manual Mode: Set manual mode to turn on/off immediately. * Smart Scene Trigger: The temp. value works as smart scene trigger conditions to turn on/off other eWeLink devices. * Voice Control: Compatible with Alexa &amp;quot;Amazon&amp;quot;, for Google Home, for Google Nest. * Waterproof temperature sensor with stainless steel temperature probe, high accuracy, wide use in daily life. TH-16 Smart Switch < strong>Features: Input voltage: AC 85-250V Input current: Max 16A Max. Power: 3500W (16A) Wireless standard: 2.4 GHz, 802.11 b / g / n Security mechanism: WPA-PSK / WPA2-PSK Control mode: EWeLink mobile APP Platform: for Android, iOS Gang: 1 Support temperature sensor: DS18B20 (not support humidity sensor now) Housing material: ABS V0 flame retardant 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 Range Temperature measurement: -55~+125 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 / 3.5oz Packing List: 1 * TH-16 Smart Switch! 1 * DS18B20 Sensor 1 * DS18B20 Sensor