The StudSensor HD55 stud finder is a popular, mid-range choice among DIYers and professionals alike. Featuring the functionality of the HD35, it additionally introduces an enhanced LCD display with Target Spotlight and a second scan mode. Now, choose to find the edges of wood and metal studs through one layer of drywall or through two layers with the additional DeepScan mode. WireWarning Detection alerts users to live, unshielded AC wiring for added safety, promoting confidence in every project.. Clear display with spotlight for precise stud detection. Dual scan modes locate studs through up to two drywall layers. Alerts to live AC wiring for safer scanning & confident projects. Features: Electronic,Hand-Held,No Additional Features. Hand Tool Type: Stud Sensor. Tools Product Type: Hand Tool. Product Width (in.): 2.8 in