When one shelf becomes three, the 240 watt Flex II driver keeps up. It powers up to 22 Flex II 10, 11 Flex II 20 or nine Flex II 25 bars, so a full propagation rack runs from one supply. Fewer drivers means fewer plugs and a tidier setup.
It takes 100 to 240 volt mains and plugs straight into a UK socket. The driver carries a 1 year warranty.