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 MP772 ST BenQ MP776 BenQ MP776 ST BenQ MP777 BenQ MP782 ST BenQ SP830 BenQ SP831 BenQ SP870 BenQ SP920 BenQ SP920P Notice: 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 months from order date.