1. Versatile detection modes: This handheld wall scanner offers multiple detection modes to meet different requirements. The student mode provides three scan options to detect wood or metal studs at depths of 13 mm, 25 mm, and 38 mm. Additionally, the AC mode detects live unprotected AC wires up to 51 mm deep. 2. Userfriendly Features: Features a green backlight for easy reading in lowlight conditions and a metal depth indicator for detection results. The device also includes a lowvoltage warning indicator. 3. Efficient Power Management: This stud detector operates with an efficient current of less than 50mA and includes an autoshutoff function after three minutes of inactivity to conserve battery life. 4. Compact and Lightweight Design: Made of PP material, this detector is lightweight and compact, measuring 16.7 x 6.7 cm, making it easy to handle and store during or after use.