Excellence Design: Wireless WIFI+RF smart switch relay module. Stable and reliable performance with high reception sensitivity(2.4GHz WIFI). You can remotely operate every machine connect with the relay receiver through the Internet from wherever on the earth. And It is compatible with RF 433Mhz radio remote controlP Quality and Programmability: This receiver adopts 10A high-quality relay that can be used over 500,000 times. Let this product is more long-lasting and stable to use. Working voltage DC 5-48V is universal.Three RF modes:,Inching、self locking and interlocking,You can easily program by yourself depends on your needs. APP+Voice Control: This WIFI switch is compatible with "Tuya" APP and "Smart Life" APP , Control your lights from anywhere.Works with Alexa and Google Assistant. You can give simple voice commands to turn on/off the devices that are connected to the smart light switch. Advanced Scheduling & Timer: Use timer or countdown schedules to set your smart switch to automatically turn on and off while you're home or away.You can share control of the connected smart switch with the whole family. Easy to Install: This is a Dry contacts relay Switch.There are 3 terminals(normally open pin, common pin, normally closed pin) for the relay.Small size of receiver,It can be easily to install in narrow space.Widely used,such as, garage door opener system, electric lock, Electromagnetic door, lamp, lighting, contactor, signal transmission and DIY remote control switch. What are the unique features of this remote control switch? 1、Mobile APP+RF remote control two control modes;Use APP to control when the distance is far away, and use remote control for the elderly and children. 2、The working voltage is DC 5V-48V, Includes 9v, 12v 、24v、36v and 48v； 3、Small size receiver, The size is 42*24*31 mm (1.6*0.9*1.2 in),which can be installed in a narrow space; 4、This WIFI switch is compatible with "Tuya" APP and "Smart Life" APP , compatible with Alexa and Google Assistant, voice control, intelligent timing, multi-person sharing. 5、Simple installation, no need for wall construction and wiring; The remote controller can be pasted anywhere necessary; 6、This is a Dry contacts relay Switch.Passive output,There are 3 terminals(normally open pin, common pin, normally closed pin) for the relay. 7、Widely used,such as, garage door opener system, electric lock, Electromagnetic door, lamp, lighting, contactor, signal transmission and DIY remote control switch. 8、A receiver can be paired with multiple remote controllers. (The product has been set with the code at the factory, so you don't need to pair it again after receiving the product.)