Wireless Light Switch: Uses RF433MHz wireless technology—no wiring required between the light and the switch. Offers stable and reliable performance with high receiving sensitivity (>-97dBm). Features long transmission distance, stable signal transmission, and low interference for consistent operation without interruptions or delays. Self-powered: The wall-mounted transmitter includes an automatic shutdown function—no external power supply or battery is needed to control RF433-enabled devices. Extends product life and reduces maintenance needs. Multiple Control: The RF433MHz receiver can pair with up to 5 wireless switches. One wireless switch can control multiple RF433 relay receivers, offering flexibility when managing devices from different locations. Enables customized control setups for various rooms or areas. Easy to Install: The RF433MHz receiver measures 47.4 x 41.2 x 25.7 mm. It installs between the power supply and the device. No complex cable routing through walls or floors—reduces installation time and cost compared to traditional wired switches. High Quality Guarantee: Built with a relay rated for over 400,000 operations. The wireless switch is rated for over 500,000 operations. The receiver includes a 10A relay suitable for high-power devices and supports AC 85V–240V (compatible with 110V, 220V, and 230V). Complies with CE, FCC, and RoHS standards.