M12 current testing
Inline current testing with the ACCER Sensor Test Box on heavy equipment.

Industrial electrical diagnostics
Built for the job, not built down to a price.
Safe, accessible test points between an equipment wiring harness and the connected sensor, switch, solenoid or other electrical component.
Purpose-built diagnostic access
The ACCER Maintenance Sensor Test Box system is designed for diagnostic work on mining, earthmoving, construction and industrial equipment—not passenger vehicles.
It gives technicians practical access to a live circuit while helping avoid pierced insulation, damaged seals and spread terminals.


How it works
An appropriate adaptor harness connects between the equipment wiring harness and the sensor, switch, solenoid or other component.
Standard 4 mm connections make it straightforward to connect a multimeter, oscilloscope or process meter while the original connector remains intact.
Proven in the field
The main test box and potentiometer simulator provide practical connection points where technicians actually need them—on the machine, during live diagnostic work.



Field demonstrations
Short demonstrations of inline measurement and controlled sensor simulation on working heavy equipment.
Inline current testing with the ACCER Sensor Test Box on heavy equipment.
Practical voltage access through the M12 inline adaptor and standard 4 mm test points.
AM-STB-1201 resistance simulation demonstrated at the machine gauge.
Controlled resistance simulation for hydraulic temperature diagnostics.
Build a system for your work
Select individual modules or use the quote form to define a complete kit around your equipment and diagnostic needs.
Carry case, main test box, potentiometer simulator, banana lead kit and SG-003A signal generator. Adaptor harnesses are ordered separately.
All Basic Kit contents plus AM-STB-3001, the complete collection of every currently active adaptor harness.
Basic Kit with M12 4-pin, Deutsch DT 2-way, Deutsch DT 3-way, AMPSEAL 16 3-way and DIN 43650 Form A adaptor kits. Connector suitability is confirmed before supply.
Four-circuit inline breakout and isolation test box with accessible 4 mm connections.
Variable-resistance sensor simulation module.
Colour-coded 4 mm diagnostic test leads.
Portable current, voltage, frequency and PWM signal generator.
Complete collection of all currently active I/O harness adaptor kits.
Featured starting package
A practical starting kit for mining and hydraulic workshops, covering commonly encountered sensor, switch and solenoid connector formats.
Connector suitability is confirmed before supply. Equipment-specific and custom adaptor combinations are available by quotation.
From
$1,798.80 + GST
$1,978.69 including GST
Adaptor harnesses
Adaptor harnesses extend the system across a mixed equipment fleet without compromising original connectors.

Application notes identify known uses and do not guarantee compatibility with every machine or component revision. ACCER confirms connector family, gender, keying and circuit suitability before quoting.
ACCER manufactured
Components are selected for dependable connections, durability and serviceability—not simply the lowest manufacturing cost.
Each ACCER-manufactured test box and adaptor harness is assembled, labelled and tested before supply.
Plan your kit
Use the build and quote request form, or contact ACCER Maintenance to discuss equipment-specific requirements.