Flex7 eZeBox Supply Tap-off Unit can only be controlled by a plug-in control device. It is convenient method for extending the supply from any preceding unit whilst allowing the additional lighting to be independently controlled. Note that the connected luminaires on a Supply Tap-off Unit can only be controlled by a suitable plug-in control device so ensure you reserve a spare outlet for this purpose. The unit plugs in either direct unit to unit, or if required as part of an interconnection system, via a suitable Supply Tap-off Lead . Units would typically be plugged in ‘unit to unit’ when for example a room requires two or more control circuits. By choosing the number and size of the units and the type of plug-in control, virtually any lighting control philosophy can be realised.