# Technical data

Digital detector | GMS 120‑27
--- | ---
Article number | ‎3 601 K81 7..‎‎‎‎
Max. detection depthA)
Non-ferrous metals (copper) | 120 mmB)
Ferrous metals | 100 mmC)
Live wires 100–230 V (with voltage applied) | 50 mmD)
Wooden beams in dry walls | 30 mmE)
Operating temperature | –10 °C to +50 °C
Storage temperature | –20 °C to +70 °C
Operating frequency range | 50 ± 2 kHz
Max. magnetic field strength (at 10 m) | 42 dBµA/m
Max. altitude | 2000 m
Relative air humidity max.
For detecting objects | 90 %
For classifying live cables | 50 %
Pollution degree according to IEC 61010-1 | 2F)
Energy supply
Lithium-ion battery pack | 3.7 V
Non-rechargeable batteries (alkaline manganese) | 2 × 1.5 V LR6 (AA)
Rechargeable batteries (NiMH) | 2 × 1.2 V HR6 (AA)
Operating time, approx.
With lithium-ion battery pack | 5 h
With non-rechargeable batteries (alkaline manganese) | 6 h
With rechargeable batteries (NiMH) | 7 h
WeightG) | 0.24 kg
Dimensions (length × width × height) | 186 × 86 × 33 mm
Protection rating | IP54
Lithium-ion battery pack (accessory) | BA 3.7V 1.0Ah A
Article number | 1 607 A35 17H
Article number JP | 1 607 A35 0N8
Charging connection | USB Type‑C®
Rated voltage | 3.7 V
Capacity | 1.0 Ah
Recommended ambient temperature during charging | +10 °C to +35 °C
Recommended ambient temperature during operation and during storage | –10 °C to +45 °C
Power supply (accessory)
Output voltage | 5.0 V
Minimum output current | 500 mA

A)

  Depends on material and size of the objects, as well as material and condition of the substrate

B)

  For a copper pipe with a 15 mm diameter

C)

  For reinforcing steel with a 12 mm diameter

D)

  Lower detection depth with non-live wires

E)

  For wooden beams with a width of 54 mm, behind 30 mm thick plasterboard

F)

  Only non-conductive deposits occur, whereby occasional temporary conductivity caused by condensation is expected.

G)

  Weight without lithium-ion battery pack/non-rechargeable batteries/rechargeable batteries/battery compartment cover

The serial number (19) on the type plate is used to clearly identify your measuring tool.

- The accuracy and detection depth of the measuring result may be negatively affected if the condition of the substrate is unfavorable.