RS PRO Lighting Controller Detector, PIR/Daylight, Ceiling Mount, 220 → 240 V ac, 76mm Diameter

Combined photocell and PIR for automatic control of indoor lighting levels when used with 1-10V dimming ballasts
Daylight compensation maintains constant light levels, also compensates for the effect of new tubes etc.
Can be flush or surface mounted with adaptors supplied
If no movement is detected, the unit can be set to turn lights off or dim for 5 minutes before final switch off

Lighting controllers designed for use within offices and warehouses. Available with dual sensors for detecting ambient light and physical movement. Outputs are in the form of switch contacts (standard types). A dimming control output version is available for use with electronic ballasts. This can control up to 10 ballasts, ideal where daylight compensation is required with constant ambient light.