S110-Stud-Sensor-Stanley-STHT77587-0-p-The-Stanley-S110-Stud-Sensor-detects-wood-&-metal-studs-up-to-19mm-in-depth-It-also-detects-the-presence-of-AC-live-wire-within-a-15-45cm-radius-&-up-to-50mm-depth-Single-button-for-simple-operation-An-audible-alert-provides-clear-notification-of-stud-detection-whilst-directional-LED-lights-provide-visual-guidance-to-stud-location-p-p-Auto-calibration-helps-to-avoid-missed-studs-due-to-incorrect-initial-calibration-With-a-slim-profile-desig