Proximity Trigger

The Proximity Trigger debuts in Dungeon Crawler Carl Book 1 as a compact, dime-sized black box with a long attached wire, serving as a wired proximity sensor that enables crawlers to rig non-static traps with conditional activation based on nearby movement. This ingenious device proves invaluable for resource-strapped survivors navigating the dungeon's lethal gauntlets, allowing clever trap setups that turn the environment against monsters and rivals alike. Across the series, it remains a staple low-tech gadget, emblematic of Carl's scrappy ingenuity, though its role evolves subtly as crawlers access more advanced tech without undergoing significant upgrades itself.