Detection: The Bosch GMS120 Digital Wall Scanner features multi-mode laser detection for wood studs, metal objects (rebar, studs and steel/copper pipes) and live wiring Performance: Features the latest 3 sensor laser technology, offering a wide range of detection performance of up to 4 3/4 inches deep in cured concrete, up to 2 inches for live wiring, up to 3 1/8 inches for copper and up to 1 1/2 inches for wood studs; The accuracy of the product is 0.0625 Self calibrating: Includes 3 selection modes for wood, metal, and AC wiring; The GMS120 offers automatic calibration from the start and continues to self calibrate through the course of the project for easy and precise detection Display: Features an illuminated graphical LCD display to indicate mode, detection strength, and more; The large detection ring flashes green for no object found, orange for object near and red for object found within the sensor range BOSCH RECONDITIONED: This item was reconditioned by Bosch to ensure quality. For questions, reach out to Bosch support. › See more product details