4PIN Pipe-Thread Conduit Entry, 1 Normally Open / 1 Normally Closed (1 NO / 1 NC) Dual-Break Contacts, Heavy-Duty Lever-Actuated Oil-Tight Limit Switch, Maintained Contact Two-Way Latching Framework, Series D Mechanical Profile, -18°C to +110°C Industrial Operational Window | Upgraded structural configuration position control switch manufactured by Allen-Bradley featuring Series D heavy-duty structural silver contact block layers and an optimized internal snap-action link loop, built to operate continuously without contact welding under intense inductive control loads | Industry Exact Equivalents: Allen-Bradley 802T-AM, Rockwell Automation 802T-AM Series D, A-B 802T-AM-D | Industry Functional Cross-References: Square D 9007C54D, Honeywell LSM1A, Eaton E50DM1 | Military Specification National Stock Number (NSN): 5930-01-384-2921