Optoma SP.8EF01GC01 Projector Lamp Replacement Northstar AV sells OEM (Original Equipment Manufacturer) Lamps - Philips, Osram/Sylvania & SHP brand lamps inside of OEM spec housings. We DO NOT sell generic or compatible replacement lamps. Projector Lamp Model: SP.8EF01GC01 Compatible Projectors Models: ES523ST, ES533ST, EX540, EX540i, EX542, EX542i, GAME TIME GT360, GAME TIME GT700, GAME TIME GT720, GT360, GT700, GT720, TX540, TX542, TX542-3D Average Lamp Hours: 2000-3000 Hours Warranty: 180 Day Warranty (From Date of Install)