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STANLEY Stud Sensor 300 (S300)
Model: Stud Sensor 300 / S300 / STHT77407 · US configuration
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An earlier 9V scanner whose exact manual documents one-pass center and edge cues up to 1-1/2 inches through drywall, plus distinct metal-scan and AC-tracking functions.
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Explore this buying guide ↗Why consider this model?
- A documented earlier candidate for dry interior drywall when the one-pass center-and-edge display and a stated 1-1/2-inch stud ceiling are useful, with a separate metal-target scan and AC-tracking mode understood as different tasks.
Tradeoffs to weigh
- This is a more mode-heavy older unit than an edge-only sensor: it requires a 9V battery, deliberate calibration and attention to STUD versus METAL/AC settings. Its 3-inch metal figure is not stud depth, and the separate AC mode cannot certify a wall safe to drill.
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