1.5-in-1 multifunction, one machine 2. Multiple detection and precise positioning 3. Choose the right tool to get twice the result with half the effort 4. Deep detection security and stability 5. Sensitive sensor, central target positioning, the sensor is particularly important 6. HD backlit display, easy to display data in the dark environment Specification: Model: HW430 Available Colors: Black / Orange Battery: 9V battery (Batteries included) How to use: 1. Hold the handle with your thumb on one side and your fingers on the other side. Make sure your fingertips are on the 2. touch the handle and not the surface 3. Scan the scanning head or tool. 4. Hold the tool vertically up and down, parallel to the bolt, without rotating it. 5. Keep it perfectly flush with the wall while slowly sliding it across the sensing surface, do not shake, tilt or press hard. Package List: 1x Wall Detector (Batteries Included)