:Sonoff RF switch is a Sonoff version with a 433MHz RF receiver module inside. This wireless switch can be used together with the RF remote controller(not included), which enables you to control appliances in indoor environment. The remote control switch allows users remote turn on/off connected appliances via APP EWeLink from anywhere in the world. As long as the mobile phone has 2G/3G/4G/WiFi network, users can remotely control the appliances by turning them on off from anywhere at any time. Another feature available is to set timing schedules for the appliances, which can include scheduled/countdown/loop timers, and can thus, help users maintain an easy life. Features:Two Control Ways Supported: WiFi remote control/ RF remote controller(not included)Remote Control: Control by 433MHz RF Remote controllerAPP Control: turn on or off connected applianceStatus Tracking: device status is timely provided to eWeLinkTiming Function: Supports max 8 enabled single/repeat/countdown timers.Compatibility: Works with Google Home, Google Home Mini, Google Nest, IFTTTNetwork Support: Control electrical devices over Wi-Fi or 2/3/4G mobile networkSmart Operation: Works with Amazon Echo, Echo Dot, Amazon Tap Connection:1. Search and download the APP "eWeLink" on the App Store or Google Play.2. Log in or register an eWeLink account.3. Open the front cover, power up.4. Press the button for 7 seconds until the Wifi LED blinks repeatedly.5. Tap + on eWeLink APP.6. Input your WiFi SSID & password.7. Name your device to complete.8. When the WiFi LED is on, the device is online. Start to control now *** Please read the User Guide carefully before use. Specification:Brand: SonoffMode: RFColor: WhiteGang: 1Wireless Standard: 2.4GHz 802.11 b/g/n & 433MHz RFRF: 433MHz (Sonoff RF Supported)Wi-Fi: 2.4GHz 802.11 b/g/nMax Power: 2200W/10APower Supply: AC 90-250V 50/60HzHumidity: 5%-90%RH, Non-condensingEnclosure Material: Fire-retardant ABSOperating Temperature: 0oC-40oC(32F-104F)Product size: Approx. 8.8 * 3.8 * 2.3cm / 3.46 * 1.50* 0.91inProduct weighs: Approx. 52g/1.83ozPackage Size: Approx. 9 * 4 * 2.8cm / 3.54 * 1.57 * 1.10inPackage Weight: Approx. 60g / 2.12oz Note:1.The 433MHz RF remote controller is not included.2. The Amazon Alexa and Google Home are not included.3.Product size, product weight, and related specifications are theoretical values only. Actual measurements between individual products may vary. Package list:1 * Sonoff RF1 * Manual