The Skyline Alpha series is based on a rubber housing with a transparent or red plastic cap. The six diode strips each with eight horizontally alligned LED´s exceed the minimum requirements of the ICAO of 10 cd explicit without dazzling. The Skyline Alpha 1 is the standard version without additional fastening material and can be mounted on stationary surfaces. Alpha 2 is pre-mounted on a mounting bracket and equipped with a 1-metre cable. The version Alpha 3 is also equipped with a mounting bracket and has an additional connecting box for simple and economic installation. For operation on masts, or at places where double safety is required, the design Alpha 4 is provided. This obstacle light has two lamps pre-mounted on a double arm and is easy to install by means of a connecting box. All designs are available with either a red or transparent cap with red LED´s.