Bosch Professional GMS 120 Manual
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English
Safety Instructions
Bosch Power Tools
All instructions must be read and observed. The safeguards in-
tegrated into the measuring tool may be compromised if the
measuring tool is not used in accordance with these instructions.
STORE THESE INSTRUCTIONS IN A SAFE PLACE.
1 609 92A 7ZF | (21.06.2022)
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Summary of Contents for Bosch Professional GMS 120

  • Page 1 All instructions must be read and observed. The safeguards in- tegrated into the measuring tool may be compromised if the measuring tool is not used in accordance with these instructions. STORE THESE INSTRUCTIONS IN A SAFE PLACE. Bosch Power Tools 1 609 92A 7ZF | (21.06.2022)
  • Page 2: Product Description And Specifications

    The measuring tool is intended for the detection of metal (ferrous and non-ferrous metals, e.g. reinforcing steel), wooden beams and live wires in walls, ceilings and floors. The measuring tool is suitable for indoor and outdoor use. Bosch Power Tools 1 609 92A 7ZF | (21.06.2022)
  • Page 3: Product Features

    Display elements (see figure A) (a) Audio signal indicator (b) Warning indicator (c) Non-metallic object indicator (d) Non-magnetic metal indicator (e) Magnetic metal indicator (f) Live wire indicator (g) Temperature monitoring indicator (h) Battery indicator Bosch Power Tools 1 609 92A 7ZF | (21.06.2022)
  • Page 4: Technical Data

    Max. altitude 2000 m Relative air humidity max. 90 % Pollution degree according to IEC 61010-1 Battery 1 × 9 V 6LR61 Approx. operating time Weight according to EPTA-Procedure 01:2014 0.27 kg Bosch Power Tools 1 609 92A 7ZF | (21.06.2022)
  • Page 5: Operation

    The battery indicator (h) on the display always indicates the current battery status: Display Capacity 60−100 % 30−60 % 5−30 % 0−5 % Operation Protect the measuring tool from moisture and direct sunlight. Bosch Power Tools 1 609 92A 7ZF | (21.06.2022)
  • Page 6: Starting Operation

    Avoid hard knocks to the measuring tool or dropping it. After severe external influ- ences and in the event of abnormalities in the functionality, you should have the measuring tool checked by an authorised Bosch after-sales service agent. Certain ambient conditions fundamentally impair the measuring results. These include, e.g.
  • Page 7 Wider objects in the base material can be identified by a continuous high amplitude of the measuring indicator (i) and fine scale (j). The light-up ring (1) will light up yellow. The duration of the high amplitude corresponds approximately with the object width. Bosch Power Tools 1 609 92A 7ZF | (21.06.2022)
  • Page 8: Operating Modes

    For these objects, the Non-metallic object indicator (c) will appear in the display. Nails and screws in the base material may result in wooden beams being identified as metal objects. Bosch Power Tools 1 609 92A 7ZF | (21.06.2022)
  • Page 9 Move the measuring tool over the surface again in order to locate the live wire more pre- cisely. After moving the measuring tool over the surface multiple times, the live wire can Bosch Power Tools 1 609 92A 7ZF | (21.06.2022)
  • Page 10: Working Advice

    Remove the measuring tool from the wall and place it elsewhere on the surface. If the warning indicator (b) flashes on the display, send the measuring tool in its protect- ive bag (19) to an authorised Bosch after-sales service centre. Bosch Power Tools...
  • Page 11: Maintenance And Service

    Note: If the measuring tool does not start automatically, repeat the recalibration. If the measuring tool still does not start, send it in its protective bag (19) to an authorised Bosch after-sales service centre. Maintenance and Service Maintenance and Cleaning Check the measuring tool before each use.
  • Page 12 English | 30 spare parts at: www.bosch-pt.com The Bosch product use advice team will be happy to help you with any questions about our products and their accessories. In all correspondence and spare parts orders, please always include the 10‑digit article number given on the nameplate of the product.
  • Page 13 2013/3113) (as amended) and the Waste Batteries and Accumulators Regulations 2009 (SI 2009/890) (as amended), products that are no longer usable must be collec- ted separately and disposed of in an environmentally friendly manner. Bosch Power Tools 1 609 92A 7ZF | (21.06.2022)

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