Intended for detecting hidden items made of wood, iron, cast iron and live wires at 230 V/50 Hz via LED and acoustic indication. Suitable chiefly for craftsmen, electricians and DIY. Detects items such as wooden slats up to 10 mm deep, iron/cast iron piping up to 20/35 mm deep, and live wires up to 35 mm deep. Power supply: 9 V battery 6F22, working temperature: –20 to 60°C at relative humidity of 30 – 80%. Comes in a blister.