UHPPOTE 433MHz Wireless Remote Control Relay Switch - 2 Channel AC/DC 12-24V Learning Encoding

Tech folks and DIYers, this wireless remote relay system is seriously cool for automating pretty much anything! It operates on 433MHz frequency, which means it can actually go through walls and floors - I've tested it through two rooms and it still works perfectly. The receiver handles both AC and DC power from 12V to 24V, so you can use it with all sorts of power supplies. There are three working modes: jog (momentary), self-lock (toggle), and inter-lock (where one button turns on and another turns off) - you just change the jumpers to switch between them. The learning encoding feature is awesome because you can pair multiple transmitters to one receiver or clear them all easily. Range is theoretically 100 meters, but realistically you'll get solid performance within 30-50 meters depending on obstacles. I've used it to control lights, garage doors, and even a water pump remotely. The receiver has both NO (normally open) and NC (normally closed) contacts, so you can set it up however you need. Fair warning though - you do need some basic electronics knowledge and maybe some soldering skills depending on your setup. The power supply needs to be regulated too, or you might get some weird behavior. But if you're comfortable with wiring and want to add wireless control to your projects, this system is incredibly versatile and reliable for the price. Comes with one receiver and one transmitter, and pairing them takes about 10 seconds once you know how!