Occupancy/Motion Sensor

[broconne]

I have done some searching and can't seem to find what I am looking for. Does anyone know of a sensor that is both an occupancy sensor and a motion sensor that runs over 22/4? Does such a beast exist? Where one of the 4 wire signifies occupancy and the other signifies motion?

 

[Sokoloff]

Motion sensors are typically 2 wires for power and 2 wires for contact closure to indicate motion/not motion (or not secure/secure, depending on how you think of it). So, any dual output would almost certainly be 6 wire, as most alarm products are built around contact closures, not high/low voltages.