Intuitive radar scanner developed for almost all materials. Spot measurement provides accurate detection on narrow surfaces, whilst the centre finder offers visual guidance to show precise location of an objects centre. Dual Power Source technology allows for use with a 12 V Li-ion battery (sold separately), or standard AA alkaline batteries. Detects Ferrous Metals, Non-Ferrous Metals, Wood, Live Wire & Filled Plastic Pipe LED Display Max. Ferrous Detection Depth: 120mm Max. Non-Ferrous Detection Depth: 38mm Max. Live Wire Detection Depth: 60mm Auto Power Off in 5 Minutes Audible & Visual Alarm Detects Ferrous Metals, Non-Ferrous Metals, Wood, Live Wire & Filled Plastic Pipe LED Display Max. Ferrous Detection Depth: 120mm Max. Non-Ferrous Detection Depth: 38mm Max. Live Wire Detection Depth: 60mm Auto Power Off in 5 Minutes Audible & Visual Alarm