Description
The AUTOOL DM303 Automotive Diagnostic Multimeter is a professional all-in-one diagnostic tool designed for automotive technicians, electricians, and repair workshops. Combining the functions of a digital multimeter, digital oscilloscope, automotive circuit tester, and signal diagnostic tool, the DM303 provides fast, accurate, and comprehensive electrical system diagnostics for both conventional and electric vehicles.
With an oscilloscope bandwidth of up to 500kHz, the DM303 captures and analyzes electrical waveforms with exceptional accuracy, making it ideal for diagnosing complex automotive electrical faults. Its integrated analog signal output can simulate square wave, sine wave, injector signals, relay operation, and ECU signals, enabling technicians to quickly identify faulty components and verify system performance.
The AUTOOL DM303 also supports K-Line and CAN Bus signal detection, allowing users to inspect vehicle communication systems efficiently. Whether you’re testing ignition systems, fuel injectors, sensors, relays, charging systems, batteries, or electronic control modules, this advanced diagnostic multimeter delivers professional-grade results while reducing troubleshooting time.
Designed with an easy-to-read color display, intelligent operation, and rugged handheld construction, the DM303 is the perfect solution for modern automotive diagnostics in workshops, garages, and service centers.
Key Features
- 4-in-1 multifunction diagnostic tool
- Digital Multimeter with high-precision measurements
- Built-in Digital Oscilloscope (500kHz bandwidth)
- Automotive Circuit Tester
- Automotive Signal Diagnostic Function
- Analog signal generator (Square wave & Sine wave)
- Fuel injector signal simulation
- Relay testing capability
- ECU signal simulation
- K-Line & CAN Bus signal detection
- Measures AC/DC Voltage, Current, Resistance & Frequency
- Auto-ranging measurement function
- Large color LCD display
- Durable handheld design for professional workshop use
- Suitable for petrol, diesel, hybrid and electric vehicles
Benefits
- Diagnose electrical faults faster and more accurately
- Combines multiple diagnostic tools into one compact device
- Saves time during troubleshooting and repairs
- Tests automotive sensors, injectors, relays and ECU signals
- Suitable for advanced vehicle electronic systems
- Ideal for both traditional and new energy vehicles
- Professional-grade performance for workshops and technicians
Applications
- Automotive electrical diagnostics
- Battery and charging system testing
- Fuel injector testing
- Relay testing
- Ignition system diagnosis
- Sensor signal analysis
- ECU signal simulation
- CAN Bus & K-Line diagnostics
- Electric vehicle motor signal testing
- Workshop, garage and automotive service centers
Technical Specifications
| Specification | Details |
|---|---|
| Model | AUTOOL DM303 |
| Display | 2.8″ Color LCD |
| Oscilloscope Bandwidth | 500kHz |
| DC Voltage | 0–1000V |
| AC Voltage | 0–700V |
| DC Current | 0–20A / 0–200mA |
| Resistance | 0–1MΩ |
| Frequency | 1Hz–1MHz |
| Circuit Drive Current | 0–5A |
| Injector Drive Output | 500–6000 RPM |
| Maximum Input Voltage | 1000Vpp |
| Working Temperature | 0°C–40°C |
Package Includes
- AUTOOL DM303 Automotive Diagnostic Multimeter
- Test Leads
- Oscilloscope Probe
- Automotive Test Probe
- USB Cable
- User Manual
- Carrying Case
