From the Manufacturer
Detects wood/metal studs through multiple wall thicknesses (1/2-Inch, 1-Inch, 1-1/2-Inch). Continuous live wire detection for safety. Lcd screen is back-lit for greater visibility when detecting studs. Laser line can be projected along the entire length of the stud. Versatile 2-laser set can be used separately or together to create horizontal and vertical laser cross lines. Projects laser lines up to 20-Feet onto a work surface. Unique adhesive dots used to mount the laser module to most walls for hands free operation. 8 adhesive dots included. Required battery-9-Volt and 2 AAA (not included).
DETECTS WOOD & METAL STUDS UP TO 1 1/2" THICK CONTINUOUS LIVE WIRE DETECTIONLCD SCREEN PROJECTS LASER LINES UP TO 20 FT ONTO A WORK SURFACELASER SET CAN BE USED SEPARATELY OR TOGETHER TO CREATE HORIZONTAL & VERTICAL CROSS LINESUPC : 076174775006Shipping Dimensions : 12.00in X 7.00in X 2.00inEstimated Shipping Weight : 1.012