The right power supply for your multirail Provides the power supply for your STAS multirail system. STAS multirail adapter 18W: when used with LED, suitable for a maximum of 16 metres of rail and a minimum of 2 to a maximum of 10 LED lights of 1.5W or 3 LED lights of 4W. Power cable length 175 cm, length of cable from adapter to rail 300 cm. STAS multirail adapter 36W: when used with LED, suitable for a maximum of 16 metres of rail, up to max. 7 LED lights of 4W. Power cable length 180 cm, length of cable from adapter to rail 300 cm. STAS multirail adapter 84W: when used with LED, suitable for a maximum of 16 metres of rail, up to max. 17 LED lights of 4W. Halogen: STAS multirail adapter 84W, max 8 metres of rail, max 3 lamps. Power cable length 180 cm, length of cable from adapter to rail 300 cm. If you require more metres / lights, you will need to use several adapters. Please note!: when using several adapters these must be independent circuits, in other words: the rails may not then be connected to each other! Make sure you never connect rails with more than 1 adapter at the same time!