Detects studs, pipes and live wires before work begins to avoid costly mishaps. This important tool prevents accidental damage to pipelines, concealed wiring and other elements. The 5-in-1 sensor suite ensures accuracy to cut down time and costs.This wall scanner features multiple scan modes. Stud modes: 1/2" (12mm), 1" (25mm), 1 1/2" (38mm). Metal scan mode: 2.36" (60mm). AC scan mode: 2" (51mm). Easily picks out wires, pipes and studs. It's an essential DIY, construction and electricians tools.