Excellent design 433MHz radio frequency wireless remote control switch. The performance is stable and reliable, and the receiving sensitivity is high (>97dbm). RF signal transmission. Strong signals can pass through walls, floors, doors, signs, etc., and can be controlled within a distance of 50 meters in open areas. The chip code is EV1527 learning code, which is the most popular technology to make remote control systems more secure. Easy to use Very easy to set up and reset. 3 operating modes can be configured (momentary/toggle/lock mode). You can easily configure it according to your needs. Product working mode is adjustable. The project has been configured in switch mode. It can also be configured in mixed mode. Such as 2-channel instantaneous mode and 2-channel switching mode. More Flexibility This receiver contains 4 relays, each with 3 terminals (Normally Open, Common, Normally Closed). These 4 relays are independent so you can control them remotely independently. Each receiver can store approximately 20 transmitters. And one transmitter can control multiple receivers. For example, you could use two relays to control the garage door/motor and two relays to control the lights. Quality guaranteed high quality relay, can be used more than 100,000 times. Make this product have a longer service life and be more stable to use. The high-power blue terminal can withstand 10A current, so this product can have a good effect even when the current is unstable. The receiver is suitable for 85V~240V voltage, making it more flexible to use. Wide Applications The products can be used in homes, farms, offices, laboratories, supermarkets, etc. You can remotely operate every device connected to the relay through the remote control receiver. Such as truck trunks, garage doors, electric doors, roller shutter doors, extension doors and electric curtains, fans, lamps, lighting, ventilation devices, signal transmission, etc. -