Unique Design: This 433MHz RF Wireless Remote Control Switch boasts stable and reliable performance with superior reception sensitivity (> -105dBm). Its strong signal penetrates walls, floors, and doors, allowing you to control the receiver from anywhere within a reliable range (up to 50 meters unobstructed). Easy to Use: Extremely easy to set up and reset. Three operating modes (momentary/toggle/latching) are selectable, allowing for easy customization to your needs. The operating mode is adjustable; this item is pre-configured to latching mode. Use the "ON" button to switch on and the "OFF" button to switch off. High Sensitivity: The receiver utilizes a 30A relay, capable of handling high-power electrical appliances for long-term stable control. Each receiver can store approximately 20 transmitters, and a single transmitter can control multiple receivers (transmitter and receiver must be paired). Quality Assurance: High-quality relays offer a lifespan exceeding 100,000 cycles. This product is engineered for enhanced stability and reliability. High-performance terminals withstand 30A current, ensuring effective operation even with unstable power. The receiver is compatible with 85V~240V voltage for versatile use. Wide Application: Ideal for homes, farms, factories, offices, laboratories, supermarkets, etc. Remotely control any device connected to the relay receiver, including lights, pumps, wireless security alarms, fans, ventilation systems, monitors, printers, fountains, and other electrical equipment.