Second Bell Perimeter Sentry Post

This folding post watches a corridor, ramp, or cargo boundary with motion, heat, and short-range identity checks. Its mast smells of machine oil and warm dust after a long watch; keep the lenses capped in storage and clean them with something kinder than a sleeve. Dock crews use it to make one guard cover two approaches, while private berths hide equivalent sensors in the walls. The post challenges, records, and raises an alarm. It does not understand jokes, disguises, or why the captain's drunk cousin is crawling under the loading net. Bad placement creates blind wedges; lazy authorization turns theft into an approved departure. Second Bell builds for the ugly hour after a second alarm, with amber service marks visible through smoke or a fogged visor. Its square-edged case stacks cleanly in union lockers, which makes it common on better-run working ships rather than private yachts.