Need a replacement lamp for a NEC projector with the following model numbers: NP4000, NP4001, NP4100, NP4100W? BTI has you covered with our premium replacement projector lamp products. This product has been engineered to meet or exceed the original manufacturer's specifications and replaces the original NEC part numbers NP04LP. All BTI power adapters are manufactured and tested under our stringent quality standards. BTI... True to the original.