Wireless Light Switch: Uses RF433MHz wireless technology, requiring no wiring between the light and the switch. Delivers stable and reliable performance with high receiving sensitivity (> -97dBm). Provides long transmission distance with stable signal transmission and reduced interference. Ensures consistent performance and prevents signal interruptions or delays. Self-Powered: The wall-mounted transmitter features an automatic shutdown function. No external power supply or battery is required to remotely control RF433-equipped devices. Multiple Control: The RF433 MHz receiver pairs with up to 5 wireless switches. One wireless switch can control multiple RF433 relay receivers. This increases flexibility when controlling devices from different locations. Custom control settings can be created for different areas or rooms. For example, install one switch on the wall in the bathroom and another on the window in the living room. Easy to Install: The RF433 MHz receiver is compact, measuring 47.4 x 41.2 x 25.7 mm. It installs between the power supply and the device. Compared to traditional wired switches, the wireless system does not require complicated cable laying. This eliminates the need to run wires through walls or floors while reducing installation time and costs. Specifications: The relay supports over 400,000 operations. The wireless switch is designed for over 500,000 operations. The receiver features a 10A relay for high-power devices. Suitable for AC 85V~240V (compatible with AC 110V/220V/230V). Complies with CE, FCC, and RoHS standards.