Inside the cheapest remote socket I could find.

It's been pointed out that the relay is marked as being rated for 125VAC which makes it a bit shady for use on 220 to 250V supplies (which is what it's designed for!) A worst case scenario could be the contacts arcing when open with a high inductive load, and the risk of fire. I was expecting this remote control socket to be terrible inside, but I was wrong. Note that this unit lacks an important safety feature often found in other similar units. A thermal fuse mounted on the relay that kills power if the relay contacts start burning. Note that it also has a pointless non functioning earth connection and should not be used for high current loads. To program a remote use the button on the switch to turn it on (LED lit.) and then hold the button in until the LED has gone off and then on again. When you release the button the LED should flash and that's when you should point a standard infrared remote at the unit and press the button you want to use. If the code is recognised the unit will then stop flashing and operate on that button. You can program up to 16 remotes before the unit drops off previous codes. To delete all codes start with the unit in an off-state (LED out) and hold the button on the socket in until the LED lights and then goes out again. If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- http://www.bigclive.com/coffee.htm This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.