Note: Users need to buy an extra RF remote controller to control the product locally.Overview: Sonoff RF switch is a Sonoff version with a 433MHz RF receiver module inside. This wireless RF switch can be used together with the RF remote controller, which enables you to control appliances indoor without phone APP. The wireless remote switch allows users remote turn on/off connected appliance of different types and brands via app EWeLink from anywhere in the world. Sonoff is a low-cost, and affordable device that can provide you with amazing smart home control experience. It sends data to cloud platform through the WiFi Router, which enables you to remotely control all appliances with APP eWeLink on your smart phone. Sonoff makes all your home appliances smart, as long as your phone has network you can remotely turn on or turn off your appliances from anywhere at any time. And by setting timing schedules for your appliances, you can maintain an carefree life. Features: *Supports control by 433MHz RF Remote. After successfully learning codes with 433MHz RF Remote, the Sonoff RF switch can be turned on/off by remote control indoors. *Supports status tracking: device status is timely provided to eWeLink. *Supports remotely turn on or off connected appliances, for example light, electric kettle, electric rice cooker, electrocar,etc. *Supports max 8 enabled scheduled/countdown/loop timers for each device. *Supports numerous WiFi smart switches on one smart phone. *Works with Amazon Echo, for Google Home, for Google Nest. *The cloud server of Sonoff RF is Amazon AWS global server. Specification:

• Voltage Input: 90-250V AC(50/60Hz)
• Max. Current: 10A
• Max. Power: 2200W
• Size: 90*40*24mm (L*W*H)
• Transmission mode: Wi-Fi communication
• Wireless Standard: 802.11 b/g/n & 433MHz RF
• Control mode: Mobile APP
• Platform: for Android, iOS
• Control distance: infinity
• Controlled lines: 1
• Humidity: 5%-90%RH, Non-condensing
• Operating Temperature: -20ºC-70ºC
• Enclosure Material: Fire-retardant ABS 

• Package Size: Approx. 9*4.2*2.5cm/3.54*1.65*0.98in
• Package Weight: Approx. 54g/1.9oz 

• 1 * RF Remote Switch Module 
• 1 * Set of Mounting Screws