Part of the Danlers PIR occupancy switches, the Danlers CEFL PIR is a ceiling flush-mounted PIR switch. These neat and unobtrusive models are ideal for flush mounting through suspended or plasterboard ceilings. The Danlers CEFLPIR is a ceiling mounted PIR occupancy switch(flush PIR occupancy switch) – the hard wired version. Coming with a 2m cable, this range is ready for a quick and easy installation.
The Danlers CEFLPIR Technical Specs
- Ceiling flush-mounted PIR switch;
- Detection zone: 360º;
- Time lag range: 10 seconds to 40 minutes in 9 steps;
- Photocell range: 100 to 1000 lux, and inactive;
- Loading: up to 6 amps (1500W) of resistive, fluorescent or inductive lighting loads, or up to 1 amp (250W) of fans;
- Dimensions: 72mm diameter x 68mm;
- Detects the occupancy and turns on the lights;
- They have a 2m cable, for quick and easy installation;
- This flush PIR requires 63 or 64mm (2.5″) diameter hole in a false or plasterboard ceiling;
- Manufacturer: Danlers, controls for lighting and HVAC;
- Ideal for false or plasterboard ceilings.
The Danlers CEFLPIR Detection diagrams
# Ceiling mounted PIR occupancy switch – For optimum coverage recommended mounting height between 2.4 and 5m
# Several PIR occupancy switches – In open plan areas. For best coverage the PIR occupancy switches should be spaced every 5m in either direction Wiring diagrams Single CEFL PIR
Left: The Danlers CEFLPIR Wiring Diagram with a single CEFL PIR
Right: A The Danlers CEFLPIR Wiring Diagram with a few CEFL PIR wired in parallel.
The Danlers CEFLPIR in Start-up mode
When the mains supply is initially connected to the PIR occupancy switch, it goes through its Start-up Mode. This means that it switches on for about 1 minute, then switches off and enters its Operating Mode. If a manual wall switch is feeding the PIR occupancy switch then it will go through the Start-up Mode each time the wall switch is switched on. By wiring the manual wall switch in the alternative position, the supply to the PIR occupancy switch is uninterrupted and it remains in Operating Mode. This means that this PIR does not go through its Start-up Mode each time the wall switch is switched on.