Series GN1
0.6-80 NmCompact bodies for precision fastening at low torque.
Electronic torque wrenches · 0.6 to 1200 Nm
Torque and angle,
Torque and angle,
straight to your MES.
A series-production line of electronic torque wrenches. The tool is the Open Protocol server. No gateway, no installed software.
0.6-1200Nm
Torque range
±2%
Accuracy
34models
Across 6 series
IP54
Protection
The platform
The wrench is the server.
Connected tools from the big names still need a controller or a gateway to reach the plant floor. Ours does not. Software already lives in the wrench, and every tightening result travels to where it is needed.
01 · Tool
The GN wrench
- Measures torque and angle on every pull
- On-board log of 10,000+ operations
- Full results.csv archive on the SD card
02 · Setup
A browser, no install
- Configurator served by the tool itself
- Presets, calibration, diagnostics, firmware
- Over USB, Bluetooth, or Wi-Fi, works offline
03 · Plant
MES and SCADA
- The wrench runs an Open Protocol server
- Each result reaches the system in real time
- Direct over Wi-Fi, with no gateways
Tightening trace
Batches and reports
Self-test
Drop and impact sensors
CSV and JSON export
Firmware from the browser
Setup and calibration run in a browser the tool serves itself.
Nothing to install and nothing to license. Connect over USB, Bluetooth, or Wi-Fi, open Chrome or Edge, and work offline: presets, calibration, traceability, and MES integration.
Served by the tool
USB
Bluetooth
Wi-Fi
Chrome / Edge · offline
Built to be cited in a quality audit.
Every unit is designed around real assembly lines: serial cycles, traceability requirements, and direct integration with the systems that record them.
Open Protocol
The wrench is the server
An on-board Open Protocol server. Your MES reads every result over Wi-Fi in real time, with no gateway or controller in between.
Torque, angle, trace
Gyroscope angle with auto zero. Every tightening captured as a full trace.
±2%
Accuracy
Digital torque to 0.005 Nm resolution on the low ranges. Factory calibrated, ISO 6789 wizard on board.
> 10,000
Every operation logged
Torque, angle, time, and pass or fail on each pull. Full results.csv archive on SD, CSV export.
IP54
Durability, measured
Aircraft aluminium and carbon housing. Drop and impact sensors plus usage counters record real conditions.
FOTA
New features after purchase
Firmware for the compute module and the radio module updates straight from the browser. The tool keeps gaining capability over its service life.
The line
34 models · 6 series
0.6 to 1200 Nm · ±2% · torque and angle on every model · series production today.
One screen. Three themes for the shop floor.
Large figures read from a distance, and three themes match the light of the bay. The same display runs on every GN series.
Torque and angle on one screen
Target and tolerance
Peak mode and trace
Audible and colour OK signal
Three shop themes
The range
34 models. Six series. 0.6 to 1200 Nm.
One connected platform covers the whole assembly station, from micro fasteners to flange joints. Enter a target torque to see which series fit.
Target torquelog scale
Nm
At 90 Nm, 2 of the six series cover your target. Matching series are highlighted with the accent marker.
Series GN2
12-120 NmVersatile span for general assembly work.
Series GN3
20-180 NmProfessional grade for industrial production lines.
Series GN4
20-300 NmReinforced for intensive, high-cycle duty.
Series GN5
40-600 NmHigh torque for large fasteners and structures.
Series GN6
100-1200 NmMaximum torque, down to flange and structural joints.
Where torque control is going.
Three generations of the tool, and what the move to a connected wrench actually adds. Facts, no marketing.
| Parameter | Click wrench Mechanical |
Electronic wrench Readout |
GN Devices Connected tool |
|---|---|---|---|
| Torque control | By preset, no actual value | Digital torque readout | Torque plus angle, full trace |
| Accuracy | ±4 to 6% | ±2 to 3% | ±2% |
| Operation result | Not recorded | In device memory | Log 10,000+, SD archive, batches |
| Data transfer | None | Manual USB export | Wi-Fi, Open Protocol to MES, live |
| Setup | Mechanical adjustment | Device keys or installed software | Browser configurator, no install |
| Tool health | None | None | Drop and impact sensors, usage, self-test |
| Feature growth | None | At a service centre | Firmware from the browser |
Work with us
Three ways to put this line to work.
GN Devices does not sell to end users. We supply and license the platform to the brands, distributors, and manufacturers who take it to market.
01
OEM and white-label
Tool brands and distributorsAdd a complete electronic torque wrench category under your own brand this year, with zero R&D. A ready line of 34 models, your packaging and documentation, shipping in series.
- Your brand across all six series
- EXW pricing and MOQ on request
- Evaluation samples ready to ship
02
Firmware and IP licensing
Makers with their own hardwareLicense the stack that turns a tool into an Open Protocol server: the on-board browser configurator, ISO 6789 calibration, and over-the-air updates. Faster and cheaper than building it in house.
- Open Protocol server firmware
- Browser configurator and FOTA
- Schematic and integration support
03
Contract R&D
Platform and system buildersBring the connected-wrench architecture into your platform: direct MES connection with no controller, angle and trace, proven across a 34-model production line.
- Architecture walkthrough under NDA
- Component or full-stack integration
- Built on shipping hardware
Full technical specification.
Platform-level parameters. Exact values for a given model are on its device passport and quotation.
Measurement
- Accuracy
- ±2% of reading
- Resolution
- Down to 0.005 Nm (low ranges)
- Angle
- Gyroscope, auto zero (ZUPT)
- Units
- Nm · kgf·cm · lbf·ft · lbf·in
- Direction
- Clockwise and counter-clockwise
- Display
- 2.4" colour IPS, backlit
Construction
- Housing
- Aircraft aluminium, carbon fibre
- Finish
- Nickel plating
- Protection
- IP54
- Drive
- 1/2" · 3/4" (by model)
- Service life
- 3 years and up
Power
- Battery
- Removable standard Li-Ion cell
- Charger
- Included
- Auto-off
- After 5 minutes idle
- Charge indicator
- Yes
Functionality
- Modes
- Track · Torque plus Angle · Cal check
- Presets
- Target torque, ± tolerance, pre-signal, angle
- Batches
- Bolt counter, batch report
- Signalling
- Buzzer and colour: pre-signal, target, overload
- Health
- Drop and impact sensors, usage counters
Interfaces and connectivity
- PC link
- USB Type-C (drive plus COM port)
- Wireless
- Wi-Fi · Bluetooth (BLE)
- Integration
- Open Protocol, the wrench runs as server
- Compatible with
- MES · SCADA · quality systems
Data and diagnostics
- Configurator
- On-board, in browser over USB or Bluetooth, no install
- Log
- > 10,000 operations plus results.csv on SD
- Export
- CSV (results) · JSON (presets)
- Self-test
- Sensors, clock, memory, battery, SD card
- Calibration
- Multi-point wizard following ISO 6789
- Firmware
- Browser update, compute and radio modules
Questions partners ask first.
No. The wrench runs an Open Protocol server on board, and your MES or SCADA connects to it directly over Wi-Fi. There is no separate box to buy, mount, or maintain.
None. The configurator is served by the tool itself and opens in Chrome or Edge over USB, Bluetooth, or Wi-Fi. It works offline. Firmware for both the compute and radio modules updates from the same browser.
The line is in series production today, and the on-board calibration wizard already follows ISO 6789. CE marking (RED, EMC, LVD) and an accredited ISO 6789-2:2017 calibration certificate are underway. We are glad to share the current status and timeline on a call.
Yes. The line is built for OEM and white-label supply: your brand, packaging, and documentation across all 34 models. We also license the firmware stack and take on contract R&D.
Thirty-four models across six series cover 0.6 to 1200 Nm at ±2% of reading, with angle measurement and full tightening-trace capture on every model.
Power comes from a removable, standard Li-Ion cell, so service logistics stay free of proprietary packs. Drop, impact, and usage counters record real operating conditions for traceability.
Put a sample in your hands.
Series-production units are ready to ship to evaluation partners. Book a short call and we will send a sample and live demo access in advance.
Book a demoThe live demo takes three minutes: wrench, browser, MES.