Top product as always I am very satisfied with the device it does everything it needs to do for what I need it for
Top product zoals altijd ik ben zeer tevreden met het toestel doet alles wat het moet doen waarvoor ik het nodig heb
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Autool | SKU:
DM303
Autool DM303 | Multimeter
Regular price
€139,95 incl.
€115,66 excl.
Unavailable
Warranty directly via AsTools
Warranty directly via AsTools
We handle warranty cases ourselves, quickly and without involving the manufacturer. Thanks to our own parts inventory and technical expertise, we can usually assist you immediately. Only in exceptional cases do we still send the product to the supplier.
2 years warranty on all products
2 years warranty on all products
All our products come with a 2-year factory warranty. This ensures you long-lasting quality and service.
Easy returns
Easy returns
You can easily request your return through your account. We will send you the return label by email. Return shipping costs are your responsibility.
Professional customer service
Professional customer service
Our experts are ready to help you quickly and professionally, both online and in our physical store. Questions? Feel free to contact us!
The Autool DM303 is an automotive multimeter with oscilloscope and signal generator in one. The 2.8-inch colour display shows measurement values and waveforms, so you can see not only whether voltage is present, but also how a signal behaves. It measures DC voltage up to 1000 V, AC voltage up to 700 V, current up to 20 A, resistance and frequency up to 1 MHz.
Designed specifically for cars, it offers an injector test (500 to 6000 rpm), a relay test for 12 and 24 V, a starting test, measurement of the ignition signal and K-line and CAN bus analysis. The signal generator outputs a 5V square wave, a 5V sine wave and a 12V square wave to simulate sensors and actuators. The case contains the test leads for all of these tests.
HIGHLIGHTS
✔Multimeter and oscilloscope — Measurement value and waveform on one screen.
✔Automotive tests — Injector, relay, starting and ignition.
✔K-line and CAN — Analyse bus traffic.
✔Signal generator — Simulate sensor signals with 5 or 12 V.
POINTS TO NOTE
✕No 120V injectors — The injector test does not work with high-voltage GDI.
✕Batteries not included — Purchase four AA batteries separately.
✕Bandwidth 200 kHz — A separate oscilloscope is required for fast signals.
✕Longer learning curve — Many functions take some getting used to.
Applications and functions
The DM303 is intended for technicians and automotive electricians who want to assess signals from sensors, actuators and data buses in addition to taking measurements.
Measuring
- Voltage: DC 0 to 1000 V, AC 0 to 700 V.
- Current: 0 to 20 A (10 A continuous) and 0 to 200 mA.
- Resistance: 0 to 1 MΩ.
- Frequency: 1 Hz to 1 MHz.
- Diode and continuity: With audible signal.
Automotive tests
- Injector test: 500 to 6000 rpm, pulse of 3 ms.
- Relay test: 12V and 24V relays.
- Starting test: Voltage dip during starting.
- Ignition: View the ignition pulse signal.
- K-line and CAN: K-line 1200 to 115,200 baud, CAN 33.33 to 500 kbit/s.
How to use it
- Choosing a cable: Select the test lead for the test: test leads, multi-function cable or ignition cable.
- Power supply: Operate on batteries or connect the battery clamp cable.
- Selecting a function: Choose measurement, oscilloscope or automotive test in the menu.
- Measuring: Connect to the circuit and view the value or waveform.
- Stopping: Switch the meter off or let it sleep after the set time.
Special functions and features
What sets the DM303 apart from a standard multimeter:
- Signal generator: 5V square wave, 5V sine wave and 12V square wave (12 V only with battery power).
- Driving components: Power automotive circuits up to 5 A.
- Self-resetting fuses: 15 A on the 10A input, 0.5 A on the mA input.
- Software updates: Via the microSD card.
- Multilingual: Menu in several languages.
Package contents
- 1x Autool DM303
- 1x Multifunctional measuring cable C01 with DC connector and injector/relay connections
- 1x Battery clamp cable C02
- 1x Ignition signal cable C03
- 1x Circuit tester cable C04 with probe tip
- 3x Jumper cables (black, green, yellow)
- 1x Set of test leads, red and black
- 1x Carry case
- 1x User manual
💡
Good to know: The injector test is intended for conventional electromagnetic injectors. You cannot use it to drive high-voltage direct injection injectors (120 V).
Technical specifications
General
- The manufacturer of the multimeter or test lead set.Brand
- Autool
- Whether this is a standard multimeter, a multimeter designed specifically for cars, or a separate lead set. This shows at a glance what you are buying.Device type
- Automotive multimeter
Safety
- Indicates at which voltage and installation type you can measure safely. A higher CAT rating offers better protection against voltage spikes.Safety category
- CAT III 600V
- CAT II 1000V
Measuring ranges
- The highest DC voltage you can measure. 60 V is sufficient for a conventional car, while hybrid and electric vehicles require more.Maximum DC voltage
- 0 to 1000 V
- The highest AC voltage you can measure, for example at a charging point or an alternator.Maximum AC voltage
- 0 to 700 V
- The highest current you can measure directly through the meter. A higher rating is useful for tasks such as tracing parasitic drain.Maximum current
- 20 A
- The highest resistance the meter can measure, for example of sensors or wiring.Maximum resistance
- 0 to 1 MΩ
- The highest frequency you can measure, useful for signals from sensors and injectors.Maximum frequency
- 1 MHz
- How little the meter loads the circuit. A high value ensures sensitive electronics are not disturbed.Input impedance
- 10 MΩ
Functions
- What you can measure besides voltage, DC current and resistance. More functions mean you can diagnose more faults with one device.Measuring functions
- Frequency
- Diode test
- Continuity test
- Dedicated tests for car components, so you can quickly see whether an injector, relay or starter motor is working correctly.Car functions
- Injector test
- Relay test
- Starter test
- Ignition pulse
- CAN bus analysis
- Signal generator
Display
- A colour display can also show graphs and signals, not just figures.Colour display
- Yes
Dimensions and weight
- The ambient temperature at which the meter operates correctly.Operating temperature
- 0 to 40°C
- The size of the meter, so you know whether it fits in your toolbox or hand.Dimensions
- 190 x 85 x 33 mm
Other specifications
- Type
- Automotive multimeter with oscilloscope
- Display
- 2.8 inch colour display, 320 × 240
- Current
- 0 to 20 A (10 A continuous), 0 to 200 mA
- Input impedance
- 2 to 3 MΩ below 160 V, 10 MΩ above 160 V
- Oscilloscope bandwidth
- 200 kHz (according to manual)
- Automotive tests
- Injector, relay, starting, ignition, K-line, CAN
- Signal generator
- 5 V block, 5 Vpp sine, 12 V block
- Power supply
- 4 × 1.5 V AA (not included) or battery clip cable
- Warranty
- 3 years device, 1 year accessories
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