I have cooling unit with an on/off switch inside the casing. I want to install a remotely controlled on/off switch. I have already purchased the remote switch and have tested it on a household light and it works fine at a distance of 25 yards. In fact, it is an RF type switch that works through walls, etc. The switch (relay) module has mains input/output wires 240 V A/C and a maximum load of 1000watts.
Here's the wiring diagram of the cooling unit:
I would like to switch the compressor on and off with the remote switch or if that's not possible, then switch the whole thing on/off.
The question is where do I put it?