HANDHELD DEVICE FOR COMMUNICATING WITH LIGHTING FIXTURES

A modular lighting system comprises: a plurality of LEDs (20); a communication module (32) having at least one first port (82); a driver module (30) adapted to drive the plurality of LEDs; an auxiliary module (86) having at least one third port; and a communication bus (38P). The driver module comprises at least one second port (82) where the driver module drives the plurality of LEDs in response to information received at the at least one second port; and rectifying circuitry (66) and conversion circuitry (68) adapted to convert an AC input signal into a DC power signal that is used to supply the DC power signal to the least one second port. The communication module, the driver module, and the auxiliary module are associated with the communication bus such that the driver module supplies the DC power signal to the communication module, and the auxiliary module over the communication bus and the communications bus provides bidirectional communications between the communication module, the driver module, and the auxiliary module.