Werma signaltechnik led double flash beacon blue werma signaltechnik 85351060 the werma signaltechnik 85351055 is an led double flash beacon that gives an intensive double flash with low current consumption the blue beacon is supplied with a 115 230v ac input voltage and can be wall base or ceiling mountedthe beacon is easy to install thanks to a snap on fixing bracket simply drill two holes attach the fixing bracket to the wall and snap on the beacon the cable can be fed through