Put an end to expensive drilling damage, such as drilling into metal water pipes or drill bits twisted on reinforcing steel, it could even save your life as it will detect live cables. Clear audio and visual detection, just swipe the detector over the area several times so that it scans and then narrows the area down until you find the exact danger area. The LED lights yellow with low audio signal when close and red with louder audio signal when above, there is a hole in the centre so you can mark the danger area exactly. Defining wood, metal and cable with a green light above the symbol of each. Audio signal can be turned off and the display can be lit for dark areas. Detecting metals (magnetic and non-magnetic), electric cables and wooden substructures and indicates live cables. Detectable materials: steel, non-ferrous metals, wooden substructures, (non) live cables. Detection depth: ferrous metals 120mm, non ferrous 80mm, live conductors 240V/110V 50mm and wood 38mm. Automatic switch off after approximately 5 minutes. Supplied with protective case, batteries and operating instructions. Bosch 2 year warranty.