Yes, we provide a relay output for other sensing devices. Both of our control units (CT-2B, CF-2C) support any sensing device that has a N.O., floating, dry relay contact (motion, infrared, microwave, etc.). Simply hook another sensing device on the terminal strip where our probe hooks up and place a 500-1000 ohm resister between the terminals. You may use other sensing devices and our probe together on the same system. There is no limit to the amount or variety that can be used on a single system. For more information, consult our product manuals.