Front view of the GEARWRENCH GWDM107 True RMS Automotive Digital Multimeter showing the clear LCD display, function buttons, and central selection dial surrounded by an orange protective boot.
GEARWRENCH automotive digital multimeter GWDM107 with red and black CAT IV test leads connected to the bottom ports, accompanied by a temperature thermocouple accessory resting on the surface.
Angled view of the GEARWRENCH 1000V AC/DC tester GWDM107 standing upright using its built-in kickstand, positioned next to the included red and black test leads and thermocouple.
GEARWRENCH GWDM107 True RMS automotive digital multimeter, CAT IV test leads, and thermocouple securely organized inside the included black zippered carrying case.
Close-up detail of the GEARWRENCH GWDM107 automotive multimeter selection dial, highlighting the various measurement settings, True RMS label, and rubberized function buttons.
Close-up of the GEARWRENCH GWDM107 digital multimeter large LCD backlight display screen showing a clear digital reading of 0.00 below the brand logo.
A mechanic's hands using the red and black test leads of the GEARWRENCH GWDM107 automotive digital multimeter to test a small green fuse near an open vehicle engine fuse box.
Front view of the GEARWRENCH GWDM107 True RMS Automotive Digital Multimeter showing the clear LCD display, function buttons, and central selection dial surrounded by an orange protective boot.
GEARWRENCH automotive digital multimeter GWDM107 with red and black CAT IV test leads connected to the bottom ports, accompanied by a temperature thermocouple accessory resting on the surface.
Angled view of the GEARWRENCH 1000V AC/DC tester GWDM107 standing upright using its built-in kickstand, positioned next to the included red and black test leads and thermocouple.
GEARWRENCH GWDM107 True RMS automotive digital multimeter, CAT IV test leads, and thermocouple securely organized inside the included black zippered carrying case.
Close-up detail of the GEARWRENCH GWDM107 automotive multimeter selection dial, highlighting the various measurement settings, True RMS label, and rubberized function buttons.
Close-up of the GEARWRENCH GWDM107 digital multimeter large LCD backlight display screen showing a clear digital reading of 0.00 below the brand logo.
A mechanic's hands using the red and black test leads of the GEARWRENCH GWDM107 automotive digital multimeter to test a small green fuse near an open vehicle engine fuse box.
GEARWRENCH

GearWrench Automotive Digital Multimeter GWDM107 1000V AC DC Tester (True RMS CAT IV Leads Thermocouple Case Electrician Diagnostic Tool Unit)

In stock
SKU: GWDM107
$69.99 USD
$99.99 USD Sale $69.99 USD

Description

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GearWrench GWDM107 True RMS Automotive Digital Multimeter 1000V Tester

The GearWrench GWDM107 True RMS automotive digital multimeter provides precise voltage, current, resistance, and temperature diagnostics across conventional, hybrid, and electric vehicle electrical circuits. Rated for CAT III and CAT IV safety environments with a 1000V AC/DC measurement range and 20A current capacity, this diagnostic tester instantly pinpoints voltage drops, parasitic battery draws, and faulty sensor wiring. Outfitted with a large 6000-count backlit digital display, a built-in folding kickstand, test lead holders, and a complete set of safety test leads with a thermocouple probe, it equips professional automotive technicians and industrial electricians with reliable multi-function troubleshooting capabilities.

Best Used For:

  • Automotive Electrical and Hybrid Diagnostics: Testing high-voltage battery systems, charging circuits, ignition pulses, fuel injector dwell times, and engine RPM across modern vehicles.
  • Industrial Circuit and Continuity Testing: Verifying electrical ground paths, diagnosing short circuits, and checking resistance values in complex machinery control panels.
  • Temperature and Environmental Monitoring: Measuring operational component temperatures using the included thermocouple probe during heavy-duty mechanical troubleshooting.

Key Performance & Safety Features

  • True RMS Measurement Technology: Delivers accurate AC voltage readings on non-linear loads and distorted electrical waveforms found in modern electronics.
  • CAT III and CAT IV Safety Rating: Built-in heavy-duty overload protection and safety circuitry safeguard the operator when testing high-energy industrial circuits.
  • Comprehensive Multi-Function Testing: Measures AC/DC voltage up to 1000V, current up to 20A, resistance up to 60MΩ, capacitance, frequency, duty cycle, and temperature.
  • Large 6000-Count Backlit Display: High-contrast illuminated screen ensures effortless parameter reading inside dark vehicle underhoods and cramped electrical cabinets.
  • Hands-Free Kickstand & Holster: Integrated flip-out kickstand and secure test lead holders allow upright bench placement during complex diagnostic testing.
  • Automated Power Management: Built-in auto shut-off function preserves battery life during extended diagnostic procedures between service calls.

What's Included

  • (1) GearWrench GWDM107 True RMS Digital Multimeter
  • (1) Set of CAT III / CAT IV Safety Test Leads
  • (1) Temperature Probe Thermocouple
  • (1) Protective Hard Carrying Case
  • (2) AAA Batteries (Pre-installed)
  • (1) User Operation Manual

Technical Specifications

Manufacturer GearWrench Tools
Model Part Number GWDM107
Measurement Technology True RMS (Root Mean Square) Digital Sensing
Maximum AC/DC Voltage Range Up to 1000 Volts AC / DC
Maximum Current Capacity Up to 20.0 Amperes AC / DC
Resistance Measurement Limit Up to 60.0 Megaohms (60 MΩ)
Safety Rating Class CAT III / CAT IV Overload Protection
Display Screen Format 6,000-Count Backlit Digital LCD Screen
Power Source Required (2) AAA Batteries (Included)
Overall Enclosure Depth 8.00 inches (203.20 mm)
Overall Enclosure Height 2.75 inches (69.85 mm)
Tool Net Operating Weight 1.50 lbs (24.00 oz / 680.39 g)
Housing Material Impact-Resistant High-Density Industrial Plastic
Universal Product Code (UPC) 099575011078
Suitable for material type Automotive Wiring, Fuses, Sensors, & Electrical Harnesses

Pro-Tip: When diagnosing intermittent electrical faults or parasitic battery drains on modern vehicles, utilize the multimeter's Min/Max recording mode to capture peak voltage fluctuations without staring at the display during live road testing.