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Bosch

GMS 120

4.8 in (121 mm)
max scanning depth ferrous metals
2.0 in (50 mm)
max scanning depth live wires
3.1 in (80 mm)
max scanning depth non ferrous metals
1.5 in (38 mm)
max scanning depth wood studs
5 h
operating lifetime
50 °C
operating temperature max

Documents

Operator Manual ↓
Official ✓ Verified source Jul 2026

Full specifications

Includes(1) GMS 120 Wall Scanner (1) Hand Strap (1) 9V Battery (1) Pouch
Max Detection Depth Copper WiringUp to 2-in
Max Detection Depth Ferrous Metals (Steel)Up to 4-3/4"
Max Detection Depth Non-Ferrous Metals (Copper)Up to 3-1/8" (80mm)
Operating Temperature14° F / -10° C ~1 22° F / 50° C
Rating9V
Size in3.75" x 7.75" x 1.4"
Weight1.7 lb (0.8 kg)

Every figure is traced to the manufacturer’s published data. ↗ opens the source.

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