A candle is a light on top of the slot device. It flashes to inform the operator that modify is required, hand pay out is requested or a potential challenge with the device. It could be lit with the participant by pressing the "provider" or "enable" button.à¸à¸à¸ªà¸³à¸«à¸£à¸±à¸šà¸à¸²à¸£à¹à¸—งà¹�