INSTALLATION MANUAL LiftMaster Windsor Drive Oak Brook, IL • THIS PRODUCT IS TO BE INSTALLED AND SERVICED BY A TRAINED GATE SYSTEMS TECHNICIAN . Installation Manual for LiftMaster Commercial DC Vehicular Swing Gate Operator Model CSW24UL. CSW24UL. 24VDC High-Traffic Commercial Swing Gate Operator. Ideal for high-traffic, heavy-duty application. Provides battery back-up when the power is down. Rated For gates up to Missing: Pdf.