【Unique Design】433Mhz RF Wireless Remote Control Switch. Stable and reliable performance, reception sensitivity (> - 105dBm). Strong signal can pass through walls, floors, doors. It can pass through walls, floors and doors, controlling the receiver from any place within a reliable distance. The maximum range can reach 50 meters without obstacles. 【Easy to Use】: Extremely easy to set up and reset. There are 3 working modes (Momentary/Toggle/Latched mode) to choose from. You can easily set it yourself according to your needs. The product's working mode is adjustable. This item has already been set as Latched mode. And the \"ON\" button to turn on and the \"OFF\" button to turn off. 【High Sensitivity】 The receiver uses a 30A relay. It 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 that can be used more than 100,000 times. Makes this product more stable and reliable. High-power terminals can withstand 30A 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 Application】 Products can be used in homes, farms, factories, offices, laboratories, supermarkets, etc. You can remotely control every device connected to the relay receiver via the remote control. such as lamps, pumps, wireless security alarms, fans, lights, ventilation devices, monitors, printers, fountains and other electrical equipment, etc. 【Secure System】 The chip code is EV1527 learning code which is the most popular technology that makes the remote control system more stable. 【Strong Signal Reception】 There is an antenna on the receiver, so you can extend it yourself to get stronger signal reception. The remote control distance can be up to 50 meters. 【More Flexibility】 Extremely easy to set up and reset. You can easily add additional wireless switches yourself according to your needs.