you can use mulitple voltage sensors which can each have seperate i/r routing.  each voltage sensor has an i/r port on it as well, so you can easily plug in the i/r emitter for the tv into that port.  the plugs on the voltage sensors are stereo plugs since it needs to be able to support 2 way data flow.  output to emitter, input from voltage sensor.

ive been using the xantec current sensor module setup with every television that i install.  it converts the power state of the tv into a 12vdc signal that the Nevo Voltage Sensor can handle.  this lets me know when to send a long version of a macro (when tv is off)  or a short version (when tv is already on)  


if you want to see how it is programmed, check out my file

[Link: remotecentral.com]