Brand new projector remote control, no programming, paring or setting is needed. Just put in new batteries (NOT Included), it will work reliably. Compatible projector models: BenQ MP724 BenQ MP727 BenQ MP735 BenQ SP820 BenQ SP840Notice: Make sure there's no obstacle between the remote control and projector when operating the device. Warranty: Refund available within 30 days, replacement available within 12 monthsfrom order date.