Referee Light System plays a crucial role in weightlifting. It is used by referees to let their decision known to weight lifters, coaches, spectators, etc. through a white and a red light. Whenever a referee notices a contravention, he activates his control, and if the majority of referees activate the control, the lift has been signalled. The colours indicate a "Good lift" and "No lift". Any referee Light System which is used at national and international levels needs to comply with the requirement of International Weightlifting Federation.