GJD is an industry leader in the design, manufacture and supply of professional exterior detection equipment, as well as CCTV and lighting controllers utilised in the intruder surveillance industry.

Based in the UK, GJD and ALT manufacture a complete range of wired and wireless external detectors, perimeter intrusion detection systems, dual and quad infrared Active Edge Beams, speech diallers and voice modules, security lighting systems and infrared and white light LED illuminators.

Our products and solutions protect homes, businesses and industrial premises around the world, making people more secure.