Description Eliminate the guesswork with this new Center Sensor Stud Finder that has a detection depth of 3/4 in. for wood and metal. While traditional stud sensors locate the edge of the stud, this 1 locates the center for a more efficient read, even when held at an angle. The sensor is constantly calibrating to save time during use. Once the stud is located, an audible alert and directional LED arrows clearly notify the user. You can easily mark the center of the stud with the center marking channel.Detection depth of 3/4 in. for wood and metalAC and live wire detection for added safetyConstant auto-calibration to save time during useCenter marking channel for added convenienceSlim profile for easy use and storageAudible alert for clear notification of stud locationDirectional LED arrows for visual guidance to stud location2 AAA batteries includedDimensions: H 9 in, W 1.3 in, D 5.875 in