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: Optoma DS219, DS309, DS317, DS327, DS329, DS550, DS551, DS611, DX327, DX329, DX550, DX551, DX617, EH1020, EP1691, EP761, ES520, ES522, ES526B, ES550, ES551, ET766XE, EW605ST, EW605ST-EDU, EW610ST, EW610ST-EDU, EW631, EX530, EX532, EX542, EX550, EX551, EX605ST, EX605ST-EDU, EX610ST, EX610ST-EDU, EX615, EX631, FW5200, FX5200, HD66, PRO800, TH1020, TH1060, TH1060P, TS551, TS725, TW610ST, TW610STi+, TW6153D, TW631-3D, TW675UTi-3D, TW695UT-3D, TW695UTi-3D, TW762, TW766W, TX540, TX542, TX5423D, TX551, TX610ST, TX6153D, TX631-3D, TX665UTi-3D, TX665UTiM-3D, TX7155, TX735, TX761, TX762, TX763, TX765W, TX766W, TX779, TX779P-3DNotice: 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 365 days from order date.