Compact, high accuracy 3-in-1 wall scanner. Detects voltage, studs and metal behind plasterboard walls. Features easy to use function keys for fast and reliable detection. Detects Ferrous Metals, Non-Ferrous Metals & Live Wires LED Display Max. Ferrous Detection Depth: 80mm Max. Non-Ferrous Detection Depth: 100mm Max. Live Wire Detection Depth: 40mm Auto Power Off in 5 Minutes Audible & Visual Alarm Detects Ferrous Metals, Non-Ferrous Metals & Live Wires LED Display Max. Ferrous Detection Depth: 80mm Max. Non-Ferrous Detection Depth: 100mm Max. Live Wire Detection Depth: 40mm Auto Power Off in 5 Minutes Audible & Visual Alarm