With a Franklin Sensors stud finder, you have the fastest, easiest, most accurate stud finder on the market. The ProSensor MAX is equipped with 13 sensors, significantly more than conventional stud finders, ensuring the highest accuracy in detecting wood and metal studs up to a depth of 2 1/2 inches. With the ProSensor MAX, there's no need for calibration—just press and hold the button against the wall for instant, reliable readings. Whether you're working with single or multi-layered walls, this stud finder adapts to various surfaces including drywall, sheetrock, plywood, and lath and plaster. Its expansive LED display not only shows the center and edges of studs but also reveals full configurations that other finders miss. Designed for durability and ease of use, the ProSensor MAX comes with a built-in bubble level, low battery indicator, and a convenient pencil caddy. It's the ideal tool for both homeowners and professionals, powered by common AA batteries for continuous readiness.