Power Tools for Professionals



Bluetooth® Tool Module

The Bosch GCY42 Bluetooth® Tool Module allows the user to connect to next-gen tool control. The module can be quickly installed into a variety of Bosch “connected-ready” tools to provide Bluetooth® connectivity to mobile devices. Bosch connected-ready tools includes impact drivers, drill/drivers, hammer drill/drivers, grinders, rotary hammers, lights, circular saws, track saws and chargers. The tool module links to the free Bosch Toolbox mobile app, so users can customize their tools, check tool and battery statuses, receive alerts about a tool issue and more. The enhanced control provided by the connectivity enables users to be more productive. The module offers up to a 100 Ft. connectivity range.

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  • (1) GCY42 Bluetooth® Tool Module


  • Connectivity Module tool enhancement - provides tool customization ability, tool and battery statuses and more
  • Wide range – offers up to a 100 Ft. Bluetooth® connectivity range
  • Bosch Toolbox app compatibility – allows for tool customization, tool and battery statuses and tool-asset inventory management
  • Next-gen customization – optimizes advanced electronic options such as soft-start rate, LED brightness or other settings, depending on the tool
  • Tool alerts – notifies the user if the tool is overheating or the battery is overloading, or if a feature such as KickBack Control is activated, depending on the tool
  • KickBack Control is activated, depending on the tool
  • Battery status – delivers charge level information and provides low-battery alerts
  • Tool-asset inventory information – provides feedback regarding tool usage, hours of operation, warranty and registration
  • Easy installation – installed in seconds using a coin to open and close the module-ready compartment on the tool
  • Battery compatibility – requires common CR2032 button/coin-size battery, which is included with the GCY42 connectivity module

Technical Data

Height 0.5"
Length 1.2"
Material Plastic
Weight 0.22lb
Width 1.2"
Works With Bosch Connected-Ready Chargers
Bosch Connected-Ready Drill/Drivers
GSR18V-755C, GSR18V-535C, GSR18V-535FC*
Bosch Connected-Ready Grinders
GWS18V-13C, GWS18V-45C, GWS18V-45PSC, GWS18V-50PSC, GWX18V-13C*
Bosch Connected-Ready Hammers
GBH18V-34CQ, GBH18V36C, GBH18V-45C*
Bosch Connected-Ready Hammer Drill/Drivers
GSB18V-755C, GSB18V-535C*
Bosch Connected-Ready Impact Drivers
GDR18V-1800C, GDX18V-1800C*, GDX18V-1860C*
Bosch Connected-Ready Impact Wrenches
GDX18V-1800C*, GDX18V-1860C*
Bosch Connected-Ready Saws
GCM18V-12GDC, GKS18V-25C, GKS18V-25GC, GKT18V-20GC*
*See each tool's or charger's owner's manual for its App features
Includes (1) GCY42 Bluetooth® Tool Module
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Owner's Manual



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