How to Make a 433MHz RF Remote Quad-Channel Relay Switch
How to Make a 433MHz RF Remote Quad-Channel Relay Switch Today we will build a 433MHz-based RF remote control switch with a four-channel relay to switch on or off up to four connected AC devices, such as a light, fan, electronic door, etc., wirelessly. The receiver module can be installed in any traditional or standard switchboard for controlling the devices. Why Build an RF Remote Relay Switch? Nowadays, you may purchase orbuild a DIY smart Wi-Fi switchand use them to control your AC devices over Wi-Fi....