I have a model with a custom circuit board with controls LEDs and motors. I want to be able to turn it on/off with a button on the model itself, or with a remote - exactly like a TV/DVD/stereo. I've never done IR before, but I imagine there will be a dedicated chip hooked up to an IR receiver (running on a button battery? It has to be small because the space in the model's base is tight) and when it receives the power command it completes a relay (latch?) between the 9VDC power supply and the PCB. Does that make sense?