The StudSensor™ 4 model has all the features of the StudSensor™ 3 version with an advanced circuit design, and can also detect studs up to 1 1/2" deep behind drywall or paneling with Zircon's patented DeepScan® technology.

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Dimensions:	2.6 in. W x 5.6 in. H x 1.0 in. D 6.6 cm W x 14.2 cm H x 2.54 cm D
Weight:	3.3 oz. (94 g) without battery (99.2 g)
Battery Type:	9-volt alkaline (not included)
Battery Life:	One year at 10 minutes/day use
Sensitivity:	Normal Mode: The center of a wood or metal stud can be found through common interior surfaces up to 3/4 inch (2 cm) with 1/8 inch (3 mm) accuracy using the dual scan and mark procedure. DeepScan® Mode: The center of a wood or metal stud can be found through common interior surfaces up to 1 1/2 inches (3.8 cm) with 3/16 inch (5 mm) accuracy using the dual scan and mark procedure.
Note:	Sensing depth and edge detection can vary due to moisture content of materials, wall texture, paint, etc.