Presence detection helps comply with Part L

PIR
Using presence detection based on PIR sensors is said by Danlers to help comply with Part L of the Building Regulations.
Passive infra-red occupancy switches for the automatic control of lighting, heating, ventilation or air-conditioning loads can significantly reduce energy bills and carbon emissions. These controls from Danlers are said to make it easier to comply with Part L of the Building Regulations, aimed at reducing the energy use of buildings by 23 to 28% compared with the previous Building Regulations. Each model of PIR occupancy switch includes an adjustable photocell over-ride, adjustable time lag before switch off and a relay for switching up to 6 A of any type of load, including fluorescent lighting. There are versions for false or plasterboard ceilings, solid ceilings, wall mounting, directional versions and a long-range versions for corridors and storage aisles. These controls are easy to install and make use of existing wiring, so they are ideal for retrofitting and, for example, lighting-control projects can be tackled room by room, area by area.
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