A light-emitting diode (LED) luminaire control system comprising a control circuit is adopted to provide remote control signals to operate an external luminaire that comprises LED arrays and a power supply. The LED luminaire control system further comprises a relay switch, a remote controller, and a transceiver circuit. When the remote control signals are initiated by the remote controller with phase-shift keying (PSK) signals transmitted, the transceiver circuit can demodulate such PSK signals and subsequently send decoded commands to the LED luminaire control system to control the luminaire by turning on and off and dimming up and down the external luminaire.