A system for controlling a group of lighting units, the system including: at least a first and a second lighting unit, said first and second lighting units each including a processor unit, an infrared signal receiver, a radio frequency receiver, a radio frequency transmitter, and a memory module integrally formed together within respective said first and second lighting units; an infrared remote control unit; and a radio frequency remote control unit; characterised in that the radio frequency remote control unit includes an interactive user interface configured for allowing a user to program said first and second lighting units by way of radio frequency control signals transmitted via a radio frequency communication link so as to define said first and second lighting units as part of the group of lighting units, said processor units of the first and second lighting units being configured for storing information in respective memory modules of the first and second lighting units that is indicative of said first and second lighting units being defined as part of the group of lighting units; said infrared remote control unit including a narrow-beam infrared remote control unit configured for allowing the user to effect communication of a directionally-focused narrow-beam infrared control signal to the first lighting unit wherein responsive to the directionally-focused narrow-beam infrared control signal being received by the infrared signal receiver of the first lighting unit, the first lighting unit is configured to: (a) perform an operational mode by reference to the received narrow-beam infrared control signal, said operational mode including the first lighting unit outputting a colour output mode, outputting a brightness dimming mode, and/or switching the first lighting unit on or off; and (b) automatically communicating a radio frequency control signal to the second lighting unit that has been defined as part of the group of lighting units, whereby said second lighting unit is configured to perform an operational mode by reference to the radio frequency control signal received from the first lighting unit and by reference to the information stored in the memory module of the second lighting unit indicative of the second lighting unit being part of the group of lighting units; and wherein the infrared remote control unit and the radio frequency remote control unit are physically separate units. at least a first and a second lighting unit, said first and second lighting units each including a processor unit, an infrared signal receiver, a radio frequency receiver, a radio frequency transmitter, and a memory module integrally formed together within respective said first and second lighting units; an infrared remote control unit; and a radio frequency remote control unit; characterised in that the radio frequency remote control unit includes an interactive user interface configured for allowing a user to program said first and second lighting units by way of radio frequency control signals transmitted via a radio frequency communication link so as to define said first and second lighting units as part of the group of lighting units, said processor units of the first and second lighting units being configured for storing information in respective memory modules of the first and second lighting units that is indicative of said first and second lighting units being defined as part of the group of lighting units; said infrared remote control unit including a narrow-beam infrared remote control unit configured for allowing the user to effect communication of a directionally-focused narrow-beam infrared control signal to the first lighting unit wherein responsive to the directionally-focused narrow-beam infrared control signal being received by the infrared signal receiver of the first lighting unit, the first lighting unit is configured to: (a) perform an operational mode by reference to the received narrow-beam infrared control signal, said operational mode including the first lighting unit outputting a colour output mode, outputting a brightness dimming mode, and/or switching the first lighting unit on or off; and (b) automatically communicating a radio frequency control signal to the second lighting unit that has been defined as part of the group of lighting units, whereby said second lighting unit is configured to perform an operational mode by reference to the radio frequency control signal received from the first lighting unit and by reference to the information stored in the memory module of the second lighting unit indicative of the second lighting unit being part of the group of lighting units; and (a) perform an operational mode by reference to the received narrow-beam infrared control signal, said operational mode including the first lighting unit outputting a colour output mode, outputting a brightness dimming mode, and/or switching the first lighting unit on or off; and (b) automatically communicating a radio frequency control signal to the second lighting unit that has been defined as part of the group of lighting units, whereby said second lighting unit is configured to perform an operational mode by reference to the radio frequency control signal received from the first lighting unit and by reference to the information stored in the memory module of the second lighting unit indicative of the second lighting unit being part of the group of lighting units; and wherein the infrared remote control unit and the radio frequency remote control unit are physically separate units.