Wireless Light Switch: Using RF433Mhz wireless technology, no wiring is required between the light and the switch. Stable and reliable performance, high receiving sensitivity (>-97dBm). Long transmission distance, stable signal transmission, and less interference. This ensures consistent and stable performance and prevents signal interruptions or delays that may affect the effectiveness of the wireless control system.Self-powered: Since the wall-mounted transmitter is equipped with an automatic shutdown function, no external power supply or battery is required to remotely control the RF433-equipped devices. This extends product life and reduces maintenance costs. Bringing comfort to your life.Multiple Control: The RF433 MHz receiver can be paired with up to 5 wireless switches. One wireless switch can also control multiple RF433 relay receivers. This increases flexibility and comfort when controlling multiple devices or appliances from different locations in a specific area. You can create custom control settings for different areas or rooms of the house. For example, install one switch on the wall in the bathroom and another switch on the window in the living room.Easy to install: The RF433 MHz receiver is mini in size, 47.4 x 41.2 x 25.7 mm. It is installed between the power supply and the device. Compared with traditional wired switches, the wireless switch and RF433 MHz receiver do not require complicated cable laying. This means you don't have to worry about running wires through walls or floors, while also reducing installation time and costs.High Quality Guarantee: High quality relay, can be used more than 400,000 times. The wireless switch can be operated more than 500,000 times. The receiver has a 10A relay for charging high-power devices. The receiver is suitable for AC 85V~240V, so there is no problem with AC 110V/220V/230V. This product complies with CE, FC and RoHS standards.