explosive proof power supply

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Exit alarm ALK devices are not recommended for exterior application. We do not offer water proof exit alarm ALK devices.
The Von Duprin Pneumatic PN98/99 series exit devices feature provides remote latch bolt retraction in hazardous areas where electrically operated devices would not be permitted.
The Von Duprin Pneumatic or "PN" device was designed for Intrinsically Safe Class 1, Division 1 applications.