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Black rectangular projector lamp module with Philips UHP 185W bulb in plastic housing

OPTOMA

OPTOMA EX531P Projector Lamp 185W Philips UHP Bulb Housing

SKU CH-CZZJ-7B0R4

Replacement lamp module with a 185 W Philips UHP bulb and housing, rated for 2,000 hours normal or 3,000 hours economy use

  • Power rating185 W
  • Lamp lifespan2,000 (Normal) - 3,000 (Economy) Hrs.
  • Product typeProjector Lamp
  • Genuine Philips UHP bulb ensures reliable brightness
  • 185W power rating matches original projector specifications
  • Lamp life up to 2000 hours normal or 3000 hours economy mode
  • Fully assembled housing allows quick tool-free installation
  • Manufactured to ISO9001 quality standards for consistent performance

Ready-to-Install Lamp Module

The OPTOMA EX531P is a complete replacement lamp module that pairs a new Philips UHP 185 W bulb with its housing, so it fits straight into compatible Optoma projectors without extra assembly. It is built for owners who need a direct swap to restore brightness quickly. Buyers looking for a bare bulb without the housing will not find that configuration here.

185 W UHP Lamp Power

The single specification that determines fit is the 185 watt UHP lamp rating, which must match the projector's original lamp requirement. Using a module with a different wattage can cause ignition errors or damage the ballast, so verify the projector manual calls for exactly 185 W before ordering.

Extended Life in Economy Mode

In normal operation the lamp is rated for 2 000 hours, while switching to economy mode extends the estimate to 3 000 hours by reducing output and thermal stress. This lower-power setting helps maintain consistent brightness over long sessions and delays the point at which a replacement becomes necessary.

How it compares

Measured against everything we stock in Replacement Projector Bulbs, at today’s prices. Recalculated every night.

Price $99.99
Typical for this category: the median of 9,513 items is $99.99.
Power rating 185 W
Lower than about 80% of the 8,831 comparable items (median 215 W).

Specifications

Product
Product typeProjector Lamp
Display
Lamp lifespan2,000 (Normal) - 3,000 (Economy) Hrs.
Power
Power rating185 W

Questions about this item

What brightness does the 185 W Philips UHP bulb deliver in a real projector?

The 185 W Philips UHP bulb is the exact wattage specified for the EX531P module, so it restores the projector's original light output without over- or under-driving the optical engine.

Which lamp interface does the EX531P module use and what does that limit?

The module uses the proprietary Optoma SP.8EH01GC01 connector, which locks the lamp to compatible Optoma projectors and prevents cross-brand installation.

What physical space and mounting points does the assembled housing need?

The pre-assembled bulb-and-housing unit matches the original EX531P dimensions and screw locations, so it slides into the projector's lamp bay and secures with the existing captive screws.

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