Features 1、5 IN 1 STUD DETECTOR: The stud finder wall scanner is used to detect wood poles, metal locations and the center of live wires on wood material or gypsum board walls and is equipped with an AC warning function. 2、ALARM DESIGN: The alarm design of the stud finder wall scanner keeps you informed of the status of the wall for more accurate operating. This detector can detect the exact position of the object. 3、QUICK LOCATION: This stud finder quickly and easily locates metal studs, beams, metal pipes, rebar and live AC wires behind walls, floors and ceilings. 4、WIDELY USED: The stud finder wall scanner identifies objects inside walls, making it more intuitive and accurate. Ideal for wood testing, metal testing and current testing. 5、HOUSEHOLD TOOL: Convenient stud finder wall scanner is sturdy, easy to operate, and able to detect changes in the density of the space behind the wall, making it a useful tool for the home. Specifications Item Type: Stud Finder Product Material: ABS Battery: 1 x 6F22 9V Battery (Shipped Without Battery) Alarm: Buzzer Gross Weight: 210g/7.4oz Package List 1 x Stud Finder 1 x Instruction Manual