45 Series Xenon beacons are visual indicators suitable for use in indoor and outdoor applications. All 45 Series beacons are fitted with a diffuser for greater visibility and spread of light. Two styles are available, Standard and Low Profile. Standard: includes a terminal block and a 27mm deep base supplied with a seal and grommet. Low Profile: comes complete with a screw and nylon wing nut and is supplied with mounting gasket and 40cm of cable.