Main Function: 1. 433MHz RF wireless relay remote control switch. 2. Remotely turn ON/OFF lights or other machines. 3. Stable and reliable performance with high reception sensitivity (> -97dBm). 4. Strong signal can pass walls, floors, doors, and more. 5. Controlled within 60 meters distance in open area. 6. 10A high-quality relay for over 100,000 uses. 7. Suitable for AC 85V~250V voltage. 8. Remote control transmitter can be clicked over 500,000 times. 9. Mini receiver size of 47*42*20 mm. Products can be used in homes, farms, factories, offices, laboratories, supermarkets, and more. Remotely operate devices connected to the receiver through the wireless switch, such as lamps, lighting, ventilation devices, and more.