I’m looking to see if what I remember is correct and, if so, if there is a modern version of it.

Here is the background. Back when I was younger, in the 80’s, my dad had his townhouse rigged up with an X.10 system complete with a little controller that you can see things on a TV. Back then there were “lamp” modules and “appliance” modules, etc.

Here is what I think I remember and what I’m looking for. For the “lamp” modules, they had a feature that if you didn’t want to use the X.10 controls, you could simple turn the lamp off and back on again ( perhaps multiple times) and the “lamp” module would detect, I assume, the drop and then increase in load and turn the relay in the module on. I assume it did this by letting a trickle through that it could monitor.

If I AM remembering that correctly, anyone know of a smartplug that has a similar feature?