RF433 No Battery Remote Control Wall Light Switch Self-Powered Wireless Switch No Wiring Required Wall Panel Transmitter. DIY Smart Switch RF433Mhz Wireless Remote Control, Self-Powered Wall Panel Transmitter, Works with Alexa Google Home, Ensures a Better Switch User Experience, Bringing Much More Convenience and Fun to Your Smart Life. Technical Data of Wall Panel Transmitter: Operating Frequency: 433 MHz. Material: HDPE Plastic (Type2). Encoding Specification: 1527. Distance: Indoor (20 meters / 65 feet), Outdoor (80 meters / 262 feet). Color: White Size (L / W / H): 86mm x 86mm x 13mm. Weight: 60g / 2.1ounces. Packing List One receiver with two transmitters together The package includes different products because you choose a different option. Multi-functional Switch One switch controls multiple receivers, and multiple switches control one receiver. Stick anywhere you want. Works well without WiFi/battery Thanks to the switch's self-powered function, it works well with the