Automotive DMM #3340

The Innova 3340 is a professional Automotive Multimeter designed to help pinpoint engine problems. Test alternator diodes, duty cycle, solenoids, breaker points, wiring, switches, and more.

Free shipping | 1-Year Warranty


This product can expose you to chemicals including DiNP, which is known to the State of California to cause cancer.
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Auto-Ranging, Auto Shut-Off & Over-Load Protection:

Easy and safe operation for users of all skill levels.

10 MegOhm Input Impedance:

Safe for electrical and automotive use. Prevent damage to the vehicle’s ECU.

High Amp Rating:

Measure up to 15 amps for device testing.

Measures Vehicle RPM:

Using included inductive pickup (including coil-on-plug vehicles.

Automotive Specific Measurements:

RPM, Dwell, Frequency, Temperature, Pulse Width, Duty Cycle

Min/Max and Hold Buttons:

Easily find and save retrieved data.

Protective Rubber Corner Guards:

Drop protection for any work environment.


Temperature probe, inductive RPM clamp and carrying case.

Need more help?
DMM Inductive AMP Probe



Why do the numbers keep fluctuating when I'm not testing anything?
This is a normal function of the Auto Ranging feature of the 3340 DMM. It is simply picking up signals from the environment around it. When conducting a test, the meter will automatically zero out before giving a reading.
Yes. The 3340 Auto-Ranging DMM will display a battery symbol on the LCD when low.
Yes. The 3340 Auto-Ranging DMM has Automatic negative (-) polarity indication symbol.
The 3340 Automotive DMM will measure 40mA and 400mA fused DC current (AMPS). The 3340 Automotive DMM will measure 15A Unfused DC current (AMPS). * A waiting period of at least 15 minutes is necessary between every 15 seconds testing period.
The 3340 Automotive DMM will measure RPM on Conventional, Distributorless Ignition Systems (DIS) ignition systems. The inductive pickup must be used with the 3340 Automotive DMM to read RPM. The range of RPM is 0 to 10,000 rpm.
You can access the batteries by removing the screw on the back of the 3340 holding the battery cover in place.
Yes. The 3340 Auto-Ranging DMM will shut off after being idle for 10 minutes.
Yes. The 3340 comes with a 0.500A/250V – UL Listed Bussmann, GMA Type (Radio Shack GMA/270 Series: #270-1047) fuse.
The 3340 Auto-Ranging DMM uses two 1.5V AA batteries.