Abstract: A lighting control system (1) comprising: a plurality of lights (3); a control unit (2); and a power usage monitor (4) suitable for monitoring the power used by the lights (3). In use, when the user varies the lighting level of a first light, the control unit is configured to vary the lighting level of at least a second light, dependent upon an evaluated total power usage level.
Abstract: A device (1) for controlling the electrical power supplied to a light source (2). The device comprises at least one dimmer (5) which is suitable for receiving an input in the form of an alternating current and producing an output in the form of a current of the same or lower power. The device also comprises a frequency sensitive apparatus 6 arranged so as to monitor the frequency of the input. The dimmer is arranged to vary the power of the output in response to the frequency of the input as detected by the frequency sensitive apparatus.
Abstract: A device for replacing conventional wall mounted light switches in situ comprises a dimmer (1) and an occupancy sensor (4). These are arranged such that the electrical power of at least one output (2) can be varied manually and in response to signals generated by the occupancy sensor.