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: Optoma EH1020 Optoma EX542 Optoma EX615 Optoma PRO800 Optoma TH1020 Optoma TW6153D Optoma TW762 Optoma TW766W Optoma TX540 Optoma TX542 Optoma TX5423D Optoma TX6153D Optoma TX762 Optoma TX765W Optoma TX766WNotice: 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.