Description Helvar 321D2 Multisensor 321D2 Key Features • Excellent detection performance through high sensitivity and multidirectional coverage • Programmable constant light control for energy efficiency • 10 mA DALI current consumption • Compact and functional design • Programmable in Designer • DALI-2 certified input device The Multisensor is a compact unit and DALI-2 certified input device that combines a light sensor for constant light control and a passive infrared (PIR) presence detector to provide energy-saving functions in a DALI system. The light sensor measures reflected light from the surface directly beneath it. The unit uses this information to maintain a constant light level by adjusting the lamp outputs. The PIR sensor enables the Multisensor to switch the lights on when its coverage area is occupied, and off when it is unoccupied. The sensor’s settings are adjusted using Helvar’s Designer software. Due to its excellent detection performance, the Multisensor is especially suitable for applications where small or slow movements take place for extended periods of time, such as offices or classrooms. Since its detection sensitivity is less dependent on movement direction than that of most PIR sensors, fewer units are required to reliably cover a target area. The unit can be mounted into a ceiling void or onto a solid surface using Helvar’s SBB-C (white) or SBB-CB (black) mounting box (sold separately). https://helvar.com/product/321d2-multisensor-dali-2/
