Electrified SP.8MQ01.GC01 / BL-FP230D Compatible Replacement Lamp With Housing For Optoma Projectors - (?Q8NJ? Projector - Serial Number beginning with Q8NJ) Works With The Following OPTOMA MODELS: HD230X, HD23, HD21, HD20-LV, HD200X-LV, HD200X, HD20, (?Q8NJ? Projector - Serial Number beginning with Q8NJ) !