Self-powered, battery-free wireless switch, wireless remote control for lights and electrical appliances, waterproof and safe, can be installed directly in a bathroom, etc. (1

RF433.92 No Battery Remote Control Wall Switch Lighting Switch Self-Powered Wireless Switch No Control Required Wall Panel Transmitter. DIY Smart Switch RF433.92MHz Wireless Remote Control, Wall Panel Transmitter. Self-powered, works with Alexa and Google Home, ensuring a better switch user experience, bringing much more convenience and enjoyment to your smart life. Package List: One receiver with one transmitter set. Note: The package includes different products if you choose another option. Receiver Technical Data: Model Number: KR2201-4. RF Working Mode: Superheterodyne Reception. Modulation Mode: ASK. RF Frequency: 433.92 MHz. Input Voltage: AC 85V~250V. Quiescent Current: 5mA. Remote Control Range: >50m (open space). Output Terminal: NO, COM, NC. Multi-functional switch: One switch controls multiple receivers, and multiple switches control one receiver. Stick it wherever you want. Works well without WiFi/battery: Thanks to the switch's self-powered function, it works well with the receiver to control connected devices without Wi-Fi or a battery. The signal can transmit through walls. Indoor range: up to 30m. Outdoor range: up to 100m. Rocker button: Unlike a traditional button, the rocker push button allows you to live more easily and conveniently. Harvest power from your fingertips. No battery needed. No wiring required. Overload protection. NOTE: Both must be purchased and used together for full use and convenience. Choose the number of receivers and controllers according to your needs for your usage scenario.