Recessed LED Emergency Downlight Non-Maintained 3W - White

The Knightsbridge EMPDL1 is a 140mm recessed LED emergency downlight operating in non-maintained mode, meaning it only illuminates during a mains power failure. A single 3W LED housed in a white polycarbonate bezel provides 3 hours of emergency lighting from an integrated NiMH battery pack, which recharges automatically when mains power is restored.

Designed for commercial buildings, rental properties, stairwells, corridors and rooms requiring compliance with UK Building Regulations Part B (fire safety), the fitting provides backup illumination during evacuation scenarios. The 11mm recessed depth requires a minimum 65mm ceiling void above the plasterboard for the battery housing and driver. The 120° beam angle spreads light across a 3-4m floor radius, suitable for spacing multiple units along corridor runs or positioning at stair landings.

The polycarbonate bezel and lens resist impact better than glass equivalents and carry a Class II double-insulated rating, meaning no earth connection to the fitting is required. The daylight 5700K colour temperature provides high contrast during emergency conditions, helping occupants identify exits and obstacles. Installation involves connection to the emergency lighting circuit via the external driver shown in the image, which must be sited in an accessible location for testing and battery replacement.

Product Specification Sheet

What does non-maintained mean?

Non-maintained operation means the LED only lights during a mains power failure. In normal conditions the fitting remains dark, unlike maintained emergency lights which operate both during normal use and power cuts. Non-maintained fittings are typically required in commercial buildings for evacuation lighting rather than dual-purpose ambient use.

How long does the battery last during a power cut?

The integrated NiMH battery provides 3 hours of emergency illumination from a full charge. This meets the standard UK requirement for emergency lighting duration in most building types. The battery recharges automatically when mains power is restored.

What ceiling void depth is required?

The fitting requires a minimum 65mm ceiling void above the plasterboard to accommodate the 11mm recessed depth of the bezel plus the battery pack and driver housing shown in the image. The driver must be positioned where it can be accessed for testing and battery replacement.

Is this suitable for bathrooms?

The IP20 rating means the fitting is not water-resistant and should only be installed in dry indoor locations. For bathrooms or other moisture-prone areas, a higher IP-rated emergency light is required.