Zircon L70 OneStep StudSensor 9v Stud FinderThe StudSensor L70 OneStep stud sensor locates the center, edges, and direction of wood and metal studs while also alerting you to the presence of live AC electrical wiring. It features a bright, backlit LCD display and a low battery indicator informing you when your battery should be replaced for optimum performance.FEATURESStudScan mode locates the center, edges, and direction of wood or metal studs up to 34 in. 19 mm deepDeepScan mode doubles the scanning depth to 1 12 in. 38 mmWireWarning detection indicates the presence of live, unshielded AC electrical wiring up to 2 in. 50 mm deepACT Auto Correcting Technology automatically corrects common errors, such as when scanning begins over a studUltra-bright backlit LCD display indicates target locationLow battery indicator for optimum performanceSignal Strength indicator helps to distinguish between shallow and deep targetsSpotLite Pointer shines an arrow-shaped light on the wall to clearly indicate the center of the studV marker groove for more accurate marking of stud locationPatented pivot pinch grip for a comfortable, secure hold in either hand, at any angleSPECIFICATIONDimensions 178 mm x 76 mm x 38 mmWeight 163g without batteryBattery Type 9V alkalineDepth StudScan mode Up to in. 19 mmDeepScan mode Up to 1 in. 38 mmOperating Temperature -7 to 41CStorage Temperature -29 to 66CWater Resistance Splash and water resistant, not waterproof