Switch between cameras w/ Sensors

[foxx d'gamma]

I would like to use my motion sensors to
switch between which camera is active. My
problem is the Motion Sensors will transmit
an OFF code after time. How can i keep the
OFF code from being transmitted. I have the
older Active Home Software and a PC, i was
thinking about making macros and whatnot, but
i dont want to have to rely on a PC if i dont
have to.