Remphos by Light Efficient Design RP-LBI-OC2-A is a 4.7" high/low motion and daylight sensor made for the LBI series light bars. It features plug and play operation, and works even behind a plastic or glass lens. It can attach to one end of a light bar, inline with other light bars, or to a linking cable. Note: Motion sensor does not come included with the light bars.
Remphos LED Light Bar Motion Sensor Data Sheet