Unique design - RF 433 MHz wireless remote control switch. Stable and reliable performance, receiving sensitivity superior to -105 dBm. A powerful signal passes through walls, floors and doors. It allows you to control the receiver remotely, through these obstacles. The maximum range reaches 50 meters (164 feet) without obstacles. Easy to use - Extremely simple to configure and reset. Three operating modes are available (momentary, toggle, latched). You can easily configure it according to your needs. The operating mode is adjustable. This device is already configured in latched mode. The "ON" button turns it on and the "OFF" button turns it off. High sensitivity - The receiver is equipped with a 30 A relay, capable of powering high-power electrical devices for long-term control stability. Each receiver can memorize up to 20 transmitters. A single transmitter can control multiple receivers (the transmitter must be compatible with the receiver). Quality guarantee - High-quality relays are designed for more than 100,000 operating cycles, giving the product greater stability and reliability. The high-power terminals support a current of 30 A, ensuring optimal operation even in the event of current fluctuations. The receiver is compatible with a voltage from 85 V to 250 V, offering great flexibility of use. Many applications - This product can be used in homes, farms, factories, offices, laboratories, supermarkets, etc. Thanks to the remote control, you can remotely control each device connected to the receiver relay: lights, pumps, wireless security alarms, fans, lamps, ventilation systems, monitors, printers, fountains and other electrical equipment.Remote control switch - [with Xiaolajiao on/off *2] + controller *1