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: BR311 BR324 BR327 BR332 DAEWSGG DAEXSGS DS331 DS343 DW343 DX343 H181X S310 S311 S313 W311 W313 X310 X313 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.