Derwent lamps give several unique benefits – Low cost of ownership, increased bulb life, and reduced maintenance and bulb replacement costs. The Uniflood range also provides even-illumination via Cosec² system to provide to enable the camera to work within its dynamic range. Derwent provide a high level of technical product support and can provide on-site demonstration and support of all their product range. Derwent are world leaders in Infra-Red CCTV surveillance.

No. The Derwent range is powered by a dedicated power supply, which includes a dusk/dawn photocell and is specially rated to optimise life and performance of the lamp.

Cosec² is the lens formula used to achieve even illumination, so that returned radiated energy to the camera is the same from wherever the subject is in the scene. This characteristic permits the camera to work within its dynamic range and avoids white out on the screen.

Yes. The Uniflood series of lamps are manufactured as standard in black. However other colours can be supplied. Refer to Derwent.

Derwent`s Uniflood 500 & 300 lamps are provided with a standard 4m lead between the PSU and lamp. This gives you maximum performance and bulb life. Reducing the lead may reduce bulb life, extending the lead will reduce IR performance but extend bulb life. There are taps in the PSU to allow for lengths up to 18M with 1.5mm² cable. Refer to Derwent for advice on your specific enquiry.

Traditionally the industry uses spot and flood combinations to cover near and far scenes. The 10º and 30º cosec beams are designed to replace these and give even illumination over the scene. Derwent spot lamp gives a more precise 6º spot. The Flood gives wide 50-60º coverage and is intended for short-range local illumination.

No. Although the light emitted from the lamp is not visible to the human eye, the camera sees the light in much the same way as we see white light. As a result the camera will ‘white out’ if the lamp is situated within the cameras direct field of view.

Yes – most Derwent power supplies have a built-in remote switch that allows on/off facilities via telemetry or PIR.