MM-78B Dedicated Automotive Multimeter

Dedicated Automotive Multimeter – MM-78B

The MM-78B Dedicated Automotive Multimeter is purpose-built for professional technicians and automotive specialists who require accurate, multi-function diagnostics in one handheld tool. With auto-ranging AC/DC voltage, frequency, resistance, capacitance, and more, it offers everything needed for comprehensive electrical testing on today’s modern vehicles.

This unit includes specialised features like inductive RPM measurement up to 12,000 RPM, duty cycle and dwell angle testing, and temperature monitoring. Built with overload protection, over-range indication, and a 40-segment bar graph display, the MM-78B is rugged, reliable, and workshop ready. Whether you’re checking sensors, tracking voltage fluctuations, or diagnosing complex circuit faults, this multimeter is a must-have tool.

Key Features of the MM-78B Multimeter

• Auto-Ranging AC/DC Voltage – Simplifies measurements with intelligent voltage scaling.
• Frequency, Resistance & Capacitance – Covers key electrical functions for detailed system analysis.
• Inductive RPM Pickup – Measures up to 12,000 RPM—ideal for engine diagnostics.
• Duty Cycle & Dwell Angle – Essential for accurate tuning and fuel system checks.
• Diode Test & Audible Continuity – Quickly checks components and circuit integrity with ease.
• Temperature Measurement – Great for sensor, engine, or ambient readings.
• 40-Segment Analogue Bar Graph – Helps visualise changes in signal behaviour.
• Data Hold & Overload Protection – Keeps readings visible and protects the meter from spikes.
• Sweeping TPS Function – Accurately monitors throttle position sensor changes.
• 10m Ohm impedance
• 40 segment analogue bar graph

Frequently Asked Questions

1. What makes the MM-78B suitable for automotive use?
   The MM-78B is engineered for vehicles, with features that go beyond a standard multimeter. It includes inductive RPM pickup, duty cycle, dwell angle, and TPS sweep functions, all of which are critical for accurate engine and fuel system diagnostics. It’s tailored for real-world automotive environments.
2. Can it be used on both petrol and diesel engines?
   Yes, this multimeter is designed for use across a wide range of vehicles, including both petrol and diesel engines. It can monitor ignition systems, fuel injector cycles, and RPM, making it valuable for general repair, tuning, and performance testing in any engine configuration.
3. Is the MM-78B easy to use for beginners?
   While it’s packed with professional features, the MM-78B’s auto-ranging voltage detection and clear bar graph display make it accessible to less experienced users. It provides reliable readings with minimal manual setup, offering ease of use without sacrificing performance or detail.
4. How accurate is the temperature reading feature?
   The MM-78B delivers accurate temperature measurements when using the supplied thermocouple probe. It’s particularly useful for checking sensor function, coolant temperature, or ambient air readings. This feature allows users to diagnose thermal issues across multiple vehicle systems quickly and precisely.
5. What safety protections are built into the device?
   To protect both the user and the unit, the MM-78B includes over-range indication and overload protection. These features guard against accidental exposure to high voltages or incorrect measurement settings, reducing the risk of damage or inaccurate results in the workshop.

Get Your MM-78B Automotive Multimeter at Power Start

Unlock advanced diagnostic capability in the palm of your hand. The MM-78B Dedicated Automotive Multimeter delivers precision, durability, and versatility across every system in your vehicle. Get your MM-78B Automotive Multimeter at Power Start and equip your toolbox with a meter made for real automotive professionals.

Related Measurement & Diagnostic Tools:

Automotive Multimeter VS-528

Hybrid Multimeter VS-228