Features 1、Accurately locate metal pipes, fire wires, studs and wooden frames 2、Detects metal up to 76mm depth 3、Detects voltage up to 76mm depth 4、Detects wood and metal stud up to 38mm 5、This detector comes along with a audio and visual indication which allows you to make a mark easily when the metal AC live wire and stud is detected Specification Description: This stud finder 3 in 1 stud center finder metal and AC live wire detector is a good helper when you decorate your home. It can avoid unnecessary losses when you want to dig a hole to hang a picture or install shelves and so on by locating hidden metal pipes, live wire,stud and wooden frames accurately. Features: 1. Easy to find stud center. 2. Accurately locate metal pipes, fire wires, studs and wooden frames. 3. Detects metal up to 76mm depth. 4. Detects voltage up to 76mm depth. 5. Detects wood and metal stud up to 38mm. 6. With auto shut off function. 7. This detector comes along with a audio and visual indication which allows you to make a mark easily when the metal AC live wire and stud is detected. 8. The LCD screen is easy to read for the backlight. 3 Detector Modes: 1. Stud Scan Mode: locates the edge of metal and wood stud in normal walls up to 1.5 inch (38mm). 2. Metal Scan Mode : locates the metal such as iron copper and aluminum pipe up to 3 inch (76mm). 3. AC Wire Scan Mode : locates the AC wire up to 3 inch(76mm). Specification: Color: Yellow Operating Temperature: - 20 ℃-50 ℃ Battery: 1 * 9V Battery (not included) Size: Approx. 15.5 * 7 * 3 cm / 6.1 * 2.8 * 1.2in Weight: Approx. 199g Package List: 1 * Detector 1 * Manual