THIS LISTING IS FOR A GENUINE ORIGINAL OEM ACER EC.J2101.001 PROJECTOR LAMP Lamp Condition Lamp is used only 100 hours and includes housing as shown in the listing picture. Original packaging is not included. Compatible Projectors PD100 PD100D PD100PD PD100S XD1170DWarranty Your satisfaction is fully guaranteed! You may exchange or refund the lamp for any reason within 1 year from date you received the lamp. Please contact me before returning any item and I will try and assist with your issue. If the projector has a fault then the lamp will need to be returned for a refund. If the lamp is faulty, I will either send a replacement lamp (if we have one in stock) or issue a refund. Feedback We leave positive feedback for all of our customers once payment has been received. If you have a problem or question regarding your transaction please contact us before leaving any type of feedback. We will work with you to resolve any problem to your complete satisfaction. Pro Tip Remember to reset your projector lamp hour counter after installing your lamp. Otherwise, the projector lamp light will remain on and in some cases the projector lamp will not even turn on! For instructions on how to do this please review your projector users guide.What is a Genuine Original OEM lamp anyway? Genuine Original Equipment Manufacturer (OEM) projector lamps are high quality lamps made by the manufacturer of your projector. Almost everyone on eBay is selling lower quality Chinese knock off lamps. Be cautious of others selling lamps that are labeled as COMPATIBLE or OEM EQUIVALENT or PROJECTOR LAMP MODULE FOR or THIS REPLACEMENT LAMP IS MANUFACTURED TO FIT...Notice no manufacturers name is mentioned. Also beware of eBay titles with no obvious lamp manufacturer. Such lamps are all third party after market substitutes that are not designed to the exact specifications of your projector and will not be as bright nor last as long as a GENUINE ORIGINAL OEM lamp. Some sellers are using deceptive listing methods to hide the fact that they are selling non OEM lamps. If there is any doubt, ask the seller if the advertised lamp is a GENUINE ORIGINAL OEM lamp.About Us From our Dallas Texas facility, Daves Bright Ideas has been selling GENUINE ORIGINAL OEM projector lamps on eBay for over 13 years. Hands down - we provide the best projector lamp value on the internet often selling OEM lamps cheaper than inferior knock off lamps. If you have any questions please feel free to send us an eBay message.