PPL 1515 is a professional full automatic projector lift system, especially designed for use on high ceilings and/or easy projector servicing. The PPL 1515 projector lift system has a unique microprocessor controlled operation & height setting. The advantages are quick installation & very accurate height positioning. It has a whisper quiet operation & 3 programable positions: stow position, show position & service position. Connecting to a automation system as Crestron, AMX or others is easy with the included interface. The maximum drop down distance is 1 mtr.