Helvar 321 Multisensor

The 321 Multisensor is a device that sets a new standard for reach and reliable motion sensitivity in Passive Infrared (PIR) technology. Easy to specify and install, the 321 Multisensor maximises personal comfort and productivity in lighting applications where where daylight harvesting, energy saving and automated lighting control are priorities. The 321 Multisensor’s fully automated operation is achieved by a photocell measuring the reflected light from the surfaces below it, and adjusting the luminaire light output in line with the available daylight.