Physical Security

Dual-tech anti-masking curtain detector

by Mark Rowe

New from GJD is the dual-tech anti-masking curtain detector, the Pearl. It uses microwave and passive infra-red (PIR) sensors with integral anti-masking detection to create a curtain beam pattern. The product with its invisible beam can be positioned to look across windows, doors or the length of a house or property wall. The detector has an optional pan and tilt bracket for ease of alignment and will warn when an intruder gets close to the window. Boundary overspill and hence nuisance alarms are minimised, the makers claim, due to the narrow field of view of the protection beams. Applications include external windows, gates, roller doors and access points in narrow passageways. The product offers up to 12m detection range with a maximum beam spread of 200cm. It has a low voltage 12VDC supply input, N/C tamper, mask and alarm contacts.

About the firm

Heywood-based GJD Manufacturing Ltd, designs, manufactures and supplies external wired and wireless detector equipment and CCTV IR and white light LED illuminators and lighting controllers as used in intruder surveillance. Visit www.gjd.co.uk.

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