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Kev txawj ntse of the elevator advertising projector, HD projector yog siv rau of the elevator advertising zaub nrog DLP thev naus laus zis
Kev pib ua haujlwm tsis tu ncua thiab kaw, los ntawm kev sib nqus induction, infrared ntse induction thiab lwm txoj hauv kev, tuaj yeem paub qhov cuam tshuam ntawm lub qhov rooj of elevator qhib, daim duab projection kaw, lub qhov rooj of the elevator kaw, cov ntsiab lus tshaj tawm yuav raug txiav tawm ntawm lub qhov rooj of the elevator.
