Labtron Handheld Metal Detector LHMD-A10 detects concealed metal objects across a large detection zone, identifying a pistol at 90 mm, a 6-inch knife at 60 mm, a razor blade at 30 mm, and a pin at 10 mm. Sensitivity adjusts via a control knob with audio, LED, and vibration alarms. Operating on a 9 V alkaline battery (7–9 V, <50 mA), it is suitable for security checkpoints, access control, and personnel screening workflows.