The dual-lamp system provides built-in redundancy – the show goes on (with reduced brightness) even if one lamp burns out.Users can change (hot swap) lamps while the projector is powered on and in use – the event/presentation does not have to stop to replace the lamp. Mission critical performances can continue without interruption.This system offers the flexibility to operate in single- or dual-lamp mode depending on business needs and energy requirements.The same lamp type fits in both, the lamp 1 and lamp 2 sections of the projector. You do not need to stock multiple lamp types.