The LiftMaster 02711 Single Pull-Switch Hazardous Surface Mnt N7/9 is an explosion-proof pull-cord control station designed for use with LiftMaster commercial and industrial door operators in classified locations. Built for hazardous environments where flammable gases, vapors, or combustible dusts may be present, this surface-mount control features an enclosure designated N7/9, indicating suitability for applications that require NEMA 7/9 hazardous-location protection. When integrated with compatible operator control terminals, a simple pull provides a contact-closure input that can be used to trigger functions such as open, close, or stop according to the operator’s programming. It serves as a durable replacement part or field add-on for facilities needing a rugged, easily actuated control in demanding industrial or commercial settings such as refineries, mills, grain handling, or chemical processing areas.
For compatibility, wire the 02711 to the control input terminals of the LiftMaster operator that supports an external pull-switch or dry-contact control; always confirm the specific operator’s control logic and wiring diagram before installation. This hazardous-location control station should be installed and maintained by a qualified electrician in accordance with the NEC/CEC and local codes, ensuring the area classification, division, and group match the NEMA 7/9 enclosure requirements and that proper conduit, sealing fittings, and grounding practices are used. As with any hazardous-location device, verify environmental ratings and ensure correct placement to maintain the integrity of the explosion-proof system.