PRODUCT OVERVIEW StudSensorâ„¢ Pro SL-AC stud finder locates the edges of wood and metal studs and joists behind walls, floors and ceilings. Patented SpotLite® pointing system shines a beam of light on the wall to identify the target and WireWarning® detection indicates the presence of live AC voltage. Its tough, ergonomic housing withstands everyday jobsite use. Description du français: DETECTEUR MONTANT PRO SL-AC Descripción español: DETECTOR DE METALES PRO SL-AC Product Details Accuracy:38 mm Battery Type:Alkaline Battery Voltage:9 V Detectable Materials:Metal/Wood Detection Range:19 mm Dimensions:5.57 in H x 2.34 in W x 1.14 in D Indicator Type:LED Operating Temperature:20 to 105 deg F Features Stud scan mode locates the edges of wood or metal studs up to 3/4 in deep DeepScan® mode doubles the scanning depth to 1-1/2 in Red LEDs light up every time a stud edge is approached Patented SpotLite® pointing system and green LED signals when the stud edge is reached WireWarning® detection indicates the presence of live, unshielded electrical wiring up to 2 in D Zircon's patented "over-the-stud" indication alerts user to start the scan in a new location if scanning begins over a stud Battery cover also doubles as a belt clip Patented carbide tip design cuts fast and is self-centering for simple, controlled starts, unique flute design clears debris quickly, reducing clogging, minimizing vibration and increasing overall drilling speed and bit Short drilling head forces debris into flute for faster penetration speed and extended bit life and reduces breakout when drilling through holes