【Unique Design】433Mhz RF wireless remote control switch. Stable and reliable performance, receiving sensitivity (-105dBm). A strong signal can pass through walls, floors, and doors. Control the receiver from anywhere within a reliable distance. The maximum range can reach 164 feet without obstacles. 【Easy to Use】 Extremely easy to install and reset. There are 3 working modes (momentary/toggle/latch mode) to choose from. You can easily configure it yourself according to your needs. The product's working mode is adjustable. This item has already been configured in latch mode. And the "ON" button to turn on and the "OFF" button to turn off. 【High Sensitivity】 The receiver uses a 30A relay. Can load high-power electrical appliances to ensure long-term stability control. Each receiver can store about 20 transmitters. And one transmitter can also control multiple receivers (the transmitter must match the receiver). 【Quality Assurance】 High-quality relays can be used more than 100,000 times. Makes this product more stable and reliable. The high-current terminals can withstand a current of 30A, so this product can have a good effect even when the current is unstable. The receiver is suitable for voltage 85V ~ 240V, it is more flexible to use 【Wide Application】 Products can be used in homes, farms, factories, offices, laboratories, supermarkets, etc. You can remotely control each device connected to the relay receiver via the remote control. e.g., lights, pumps, wireless security alarms, fans, lamps, ventilation devices, monitors, printers, fountains, and other electrical equipment, etc.