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 4K550, 4K550ST, DAEHHGL, DAEHHZZ+, DAEHSSG, DAWHGL, DAWUHGL, DAXHGL, DAZHHZS, DU380, EH319UST, EH319USTi, EH320UST, EH320USTi, EH330UST, EH331, EH334, EH335, EH336, EH340UST, EH345, EH400, EH400+, EH412, EH412ST, EH415e, EH415ST, EH416, EH490, EH504, EH504WIFI, EH512, GT5000, GT5500, GT5500+, H183X, W319UST, W319USTi, W319USTir, W320UST, W320USTi, W320USTiP, W330UST, W331, W340UST, W341, W345, W355, W400, W400+, W412, W415e, W416, W512, WU334, WU336, WU416, X345, X355, X400, X400+, X412, X416, ZH403 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.