Light output device

A light output device comprising:

• a power connection for connecting to a power source;
• a plurality of light source device arrangements arranged in a line extending from the power connection, with adjacent light source device arrangements in the line connected together with an electrical connector arrangement comprising at least one power supply line and at least one power return line, the connector arrangement adapted to carry at least one control signal;
• and
• - a plurality of control circuits, each light source device arrangement associated with a control circuit from the plurality of control circuits for providing independent control of the light source device arrangement output based on the control signal,
• wherein when the connector arrangement between an adjacent pair of light source device arrangements is disconnected, one or more remaining light source device arrangements extending from the power source are independently controlled by the control signal.