Reverse Engineering a RF Remote Power Switch

Reverse engineering a remote power switch... a nifty gadget for having a "light switch" on a wall and then, typically, a lamp in a room. Based around a surface-acoustic-wave (SAW) resonator and a small microprocessor which generate a unique 20 bit modulation signal. More info, including LT spice here: https://electronupdate.blogspot.com/2025/11/ali-express-remote-power-switch.html Listing of the specific switch: https://www.aliexpress.com/item/1005008624426312.html