Werma signaltechnik led permanent beacon green werma signaltechnik 85320054 the werma signaltechnik 85320054 is an led permanent beacon that can be wall base and ceiling mounted the 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 one of the eight self sealing membranes without the need for any tools once the cable has been connected to the terminals the len