The AD-2 activity detector uses a diffuseinfrared beam to monitor changes in postion. It is available with a fixed, reflective detector (model AD-2) or with a probe pair that can be placed in any orientation, for either direct or reflected infrared light. This versatile optically based motion detector is ideal for creating and index of activity or for monitoring specific areas for activity.

The MAD-1 activity detector is a versatile motion detector designed for mouse to squirrel sized animals in chambers and cages.  Any movement by the animal in the cage or chamber placed on the MAD-1 causes a shift in the balance between sensitive force transducers, creating a signal that is a non-invasive index of activity.