Bosch® wall scanners find magnetic and non-magnetic metals, power cables, wooden substructures or even plastic pipes with maximum reliability and precision. The illuminated ring indicates detection status: green (no object found) - orange (object near) - red (object found within the detectable sensor area). Three selection modes (wood, metal, AC wiring) with automatic calibration for easy and precise detection. Audible detection signal with on/off button and ergonomic soft-grip for secure grip and comfort