Brand new projector remote control, no programming, paring or setting is needed. Just install new batteries (NOT Included), it will work reliably. Compatible projector models: BenQ DW921 BenQ DX920 BenQ L6000 BenQ LK952 BenQ LK953ST BenQ LK990 BenQ LU950 BenQ LU951 BenQ LU951ST BenQ SU922+ BenQ SW921+ BenQ SX920+ 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.