About this item ACCURATE: More sensors = More accuracy. Conventional stud finders have 1 or 2 sensors. The ProSensor M150 has 9, making it the most accurate stud sensing tool on the market. EASY: One mode finds it all! The ProSensor M150 adjusts for a variety of depths, materials, and textures. No calibration required. Press and hold the button to begin scanning. The ProSensor M150 allows you to start scanning anywhere, even over a stud. DISPLAYS FULL STUDS: The LEDs show the whole stud, double studs, and irregular configurations. DEEP DETECTION: The ProSensor M150 has a max detection depth of 1 1/2" through drywall/sheetrock and more. EXTRA FEATURES: Live Wire Detection. Two AAA batteries required, not included. NOT compatible with rechargeable batteries. › See more product details