An appliance module should do the trick if it is set to the proper unit code, however:
The X10 cams are made so that the camera is always powered on, and the x10 module only turns on/off the RF transmitter. This was the major breakthrough they called "instant on" a few years back. Even if the IR camera is working properly with the X10 appliance module, it may take a few seconds to get a stabile picture from the IR camera because every time you select it, it is having to 'cold' start.
Try it out, though and let us know!