Stud sensor locates the edges of studs or joists through dry wall and other common wallboard.Maximum depth 19 mm.+/-3 mm wood stud centre detection accuracy.+/-6 mm metal stud centre detection accuracy.Works off a 9V battery and features automatic shut off. Pencil notch for marking, LED display and buzzer indicates stud and joist edges.Continuous live wire detection.Battery NOT included.
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