In contrast to traditional halogen lamps, "cluster lamps", equipped with a large number of produce massive luminous intensity with very low power consumption. The long lifecycle (LED), shatter-proofing & very compact construction also permit use in industrial locations for the purpose of illumination, report, status & warning displays. Front mounting using two side fixing straps or by a M4 thread on the rear. Front is watertight, sealed on the rear of the housing with the supplied rubber washer.