Absent Without Leave?

Flex Connectors have added an absence detector to their new range of fos2000 lighting control devices, to expand the choices available to organisations trying to improve their energy efficiency.

Absence detectors represent an ideal option for occupancy sensing lighting control, ensuring that lights are not left on in empty rooms or areas, whilst still allowing occupants to turn lights on or off manually.

Hugh Gearing, Managing Director at Flex Connectors, believes that "absence detectors provide a degree of human control over lighting, which is often missing from fully automatic control schemes.

This makes them a particularly good choice for installation in public buildings such as hospitals and educational institutes, where the requirement for energy efficiency sometimes conflicts with the day-to-day needs of the people using these buildings".

Absence detectors operate in the same way as presence detectors - a passive infra red sensor detects occupancy in an area and turns power on, then turns the power off after a preset time when occupancy is no longer detected.

However, the lights controlled by an absence detector will only turn on when a switch is pushed, allowing the occupants to decide whether they require the lights on or not.

If required, the same switch can also turn lights off.

As with all flex 7 sensors, absence detectors can be connected to form simple networks and also linked to corridor hold units.

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