General description: This 433MHz RF wireless lighting switch is designed for easy installation without wiring. It enables remote control of lights and appliances with a range of up to 50 meters in open spaces. Thanks to its high reception sensitivity (> -97dBm), it ensures stable and reliable performance, even through walls and doors. Technical specifications: Frequency: 433MHz; Receiver dimensions: 47*42*23 mm; Supply voltage: AC 85V ~ 250V; Load capacity: 10 amperes; Switch lifespan: Over 500,000 clicks; Battery life: Approximately 5 years; Battery type: 12V 27A. Installation: The receiver is easily installed between the power supply and the appliance. It can be hidden in most electrical boxes or junction boxes, or mounted with screws. No wiring is required, which significantly simplifies installation. The wireless switch allows you to turn devices on or off from anywhere. Each receiver can memorize approximately 10 wireless switches, enabling shared control within the family. A single transmitter can also control multiple receivers, providing flexibility. The high-quality relay can be used over 400,000 times, ensuring increased durability and reliability.