RC Wireless Remote Switch 433 MHz, 2 Channels AC 220V with Relay Receiver and 2 Remote Controls for Garage Door, Roller Shutter, Lights, Pumps. Stable and Reliable Performance: Features high receiver sensitivity (>97dbm). The powerful signal can pass through walls, floors, and doors, allowing control up to 50 meters without obstacles. Extremely Easy Installation and Reset: Offers 3 operating modes (momentary, toggle, latched) for customization. The operating mode is adjustable and products are pre-configured in toggle mode. Independent Relays: The receiver includes 2 relays, each with 3 terminals (normally open, common, normally closed). These relays operate independently, allowing individual remote control via the remote's buttons. Each receiver can store approximately 20 transmitters, and one transmitter can control multiple receivers. Versatile Applications: Suitable for various environments like homes, farms, factories, offices, laboratories, supermarkets, etc. Remotely control devices connected to the relay receiver, including garage doors, electric doors, roller shutters, expansion doors, electric curtains, fans, lights, ventilation devices, signal transmissions, and more.