There’s a hard lesson every sparkie or maintenance tech eventually learns: a bargain-bin multimeter costs you far more in wasted time and wrong readings than it ever saves at checkout. Whether you’re chasing a voltage drop in an industrial switchboard, verifying isolation on a 400 V drive system, or checking VFD output waveforms on a conveyor line, you need a meter that tells you the truth — every time.

The Megger AVO840 True RMS Digital Multimeter is built for exactly that environment. Rated CAT III 1000 V and CAT IV 600 V to IEC 61010, it covers the full sweep of Australian trade and industrial applications, from 230 V residential circuits right through to 415 V three-phase industrial plant. It’s not just a safety rating on paper — the AVO840 is double-insulated, drop-tested to 2 m, and rated IP44 for dust and water resistance. You can use it in a motor control centre, a roof cavity, or a construction site in the rain.

True RMS Measurement — Why It Actually Matters

An average-responding meter will give you a dangerously misleading reading on anything other than a pure sine wave. The AVO840 delivers genuine True RMS measurement across both AC voltage and AC current — meaning it accurately captures the real heating value of distorted, pulsed, triangular, and trapezia waveforms with an AC bandwidth of 50 Hz to 1 kHz.

In practical terms: when you’re testing VFD motor outputs, power supplies, UPS systems, or any load with non-linear switching characteristics, the AVO840 gives you the number you can actually act on. Average-responding meters on these signals can be off by 10–40%. That’s the difference between a pass and a missed fault.

Low-Z Mode — Silence the Ghost Voltages

Anyone who’s worked on modern energy-efficient buildings or long cable runs knows the frustration of ghost voltages — stray induced voltages that show up on dead circuits and make you doubt whether something is truly de-energised. The AVO840’s Low-Z mode switches the input to an approximately 3 kΩ impedance, loading the circuit enough to collapse any capacitively coupled phantom voltage while still measuring genuine supply voltages accurately.

This is especially important for compliance verification: when you need to prove a circuit is isolated before working on it, a ghost voltage reading on a high-impedance meter creates unnecessary risk and paperwork. The AVO840 gives you a clean, reliable answer.

Stay Connected — Bluetooth & the AVO Link App

The AVO840 pairs wirelessly with Android or iOS devices via Bluetooth, giving you access to the free Megger AVO Link App. This lets you log readings remotely, monitor measurements from a safe distance when working near energised equipment, share live data with a colleague or supervisor, and run more sophisticated diagnostics from your phone or tablet.

For solar installers doing string voltage checks on rooftops, or maintenance technicians monitoring motor current trends across a shift, the ability to capture and export readings without transcription errors is a genuine productivity gain.

Built for the Trade Environment

The AVO840 isn’t a lab instrument dressed up for field use — it’s designed from the ground up for working tradies and technical professionals:

Drop resistance: Tested to survive a 2 m fall onto a hard surface. In an enclosure panel or on a scaffold, meters get dropped. The AVO840 is built to survive it.

IP44 enclosure: The double-moulded housing keeps out dust and water splashes, making the AVO840 suitable for outdoor work and harsh industrial environments.

Built-in LED torch: The working light means you can probe junction boxes, switchboards, and dark cable trays without needing a second set of hands. Small detail, big difference on the job.

Analogue bar graph: Useful for tracking signals that fluctuate over time — motor startup currents, contact bounce, voltage instability — where a numerical display updates too slowly to capture what’s happening.

Auto power off: Activates after approximately 15 minutes of inactivity so you’re not chasing a flat battery on the job.

Measurement Capability at a Glance

The AVO840 covers the full range of measurements a working electrician or maintenance tech needs in a single instrument:

• AC & DC Voltage to 1000 V (6000-count resolution, True RMS)
• AC & DC Current to 10 A (μA, mA, and A ranges)
• Resistance to 60 MΩ (6 ranges from 600 Ω to 60 MΩ)
• Capacitance to 6000 μF (6 ranges)
• Frequency to 10 kHz with duty cycle measurement
• Temperature −20 °C to 760 °C via K-type thermocouple (included)
• Continuity with audible beep (< 50 Ω threshold)
• Diode test (1 mA typical test current, 3 V open circuit voltage)
• Min/Max/Average recording for signal fluctuation capture

Who the AVO840 Is Right For

Electrical Contractors: Everyday voltage proving, fault finding, continuity checking, and load current measurement — from domestic switchboards through to commercial switchgear. CAT III 1000 V and CAT IV 600 V coverage handles the full range of Australian installation work.

Industrial Maintenance Teams: Motor current trending, VFD output analysis, PLC signal verification, and HVAC system diagnostics. True RMS and Low-Z are non-negotiable for this environment. The AVO840 handles it all.

Solar Installers: String voltage checking, insulation testing preparation, and inverter output measurement. Bluetooth data logging means fewer errors when recording results at height or in awkward positions.

Facility Managers & Safety Officers: Voltage verification before maintenance tasks, continuity confirmation in emergency lighting systems, and general electrical safety spot-checks. The AVO840’s ruggedness and clear CAT rating make it a defensible choice for compliance documentation.

HVAC Technicians: Temperature measurement with included K-type thermocouple, motor current measurement, capacitor testing, and low-voltage control circuit verification.

Technical Specifications

What’s in the Box

• AVO840 Multimeter (1015-514)
• 1 m 4 mm non-fused right-angle connector test leads × 2 (rated CAT III 1000 V / CAT IV 600 V / 10 A max)
• 4 mm exposed metal probes × 2
• Exposed tip probes for CAT II probing × 2
• Red and black crocodile clips (rated double insulated, CAT III 1000 V / CAT IV 600 V / 10 A max)
• K-type multimeter adapter
• K-type thermocouple lead
• Soft carry case
• 4 mm cap plugs × 2
• AAA alkaline batteries (pre-installed)

What is the Megger AVO840 used for?

The Megger AVO840 is a professional True RMS digital multimeter used for electrical fault-finding, industrial maintenance, and compliance verification. It measures AC and DC voltage to 1000 V, AC and DC current to 10 A, resistance to 60 MΩ, capacitance to 6000 μF, frequency to 10 kHz, and temperature via K-type thermocouple. Common applications include switchboard testing, motor current measurement, VFD output analysis, HVAC diagnostics, and voltage proving on de-energised circuits. It is suited for licensed electricians, industrial maintenance teams, solar installers, and HVAC technicians working across Australian residential, commercial, and industrial sites.

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What does Low-Z mean on a multimeter?

Low-Z (low impedance) mode switches the multimeter’s voltage input to a low input impedance — approximately 3 kΩ on the AVO840 — rather than the standard high-impedance input (> 10 MΩ). This loads the circuit under test enough to suppress ghost voltages: stray induced voltages that appear on de-energised conductors near live cables due to capacitive coupling. In Low-Z mode, a genuine live voltage will still read correctly, but phantom voltages will collapse to near zero. This makes Low-Z mode essential for safe absence-of-voltage verification before commencing electrical work.

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Is the Megger AVO840 True RMS?

Yes. The AVO840 measures both AC voltage and AC current using True RMS (Root Mean Square) calculation, not average-responding simulation. True RMS accurately measures the real heating value of any AC waveform — including distorted, pulsed, triangular, and trapezia waveforms — with an AC bandwidth of 50 Hz to 1 kHz. This is essential when measuring variable frequency drive (VFD) outputs, UPS systems, electronic ballasts, switching power supplies, and other non-sinusoidal loads where average-responding meters can produce readings that are 10–40% in error.

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What safety rating does the Megger AVO840 have?

The AVO840 is rated CAT III 1000 V and CAT IV 600 V in accordance with IEC 61010-2-033. CAT III 1000 V covers fixed electrical installation work including distribution boards, switchgear, and industrial equipment operating from a 230/400 V supply. CAT IV 600 V covers measurements at the origin of a low-voltage installation — such as utility metering points and overhead line connection points. The meter also complies with IEC 61010-1 Pollution Degree 2 and carries EMC certification to IEC 61326-1 / CISPR 11 Group 1 Class A.

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Does the Megger AVO840 work with a phone app?

Yes. The AVO840 connects to Android and iOS smartphones and tablets via Bluetooth, and is compatible with the free Megger AVO Link App. The app allows you to view live measurements remotely, log readings over time, capture Min/Max/Average data, and share results digitally — useful for reporting, commissioning documentation, and monitoring readings from a safe distance when working near energised equipment.

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How tough is the Megger AVO840?

The AVO840 is rated IP44 (protection against solid objects > 1 mm and water splashing from any direction) with a double-moulded enclosure. It has been designed and tested to withstand a 2 m drop onto a hard surface. It operates in temperatures from 0 to 40 °C at up to 70% relative humidity, and can be stored down to −10 °C. The fuses are high-rupture-capacity types: 10 A / 1000 V / 30 kA on the amp input and 800 mA / 1000 V / 30 kA on the mA input, providing substantial overcurrent protection in the event of a test error.

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What accessories come with the AVO840?

The AVO840 (part number 1015-514) ships with a comprehensive accessory set: two 1 m 4 mm right-angle test leads, two 4 mm metal probes, two exposed-tip CAT II probes, red and black crocodile clips, a K-type thermocouple lead and multimeter adapter for temperature measurement, a soft carry case, 4 mm cap plugs, and AAA alkaline batteries. All included leads are rated double insulated, CAT III 1000 V / CAT IV 600 V / 10 A max. Optional accessories include fused test leads (part 1002-015), unfused test leads with crocodile clips (1002-001), and a magnetic hanging strap (1010-013).

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The AVO840 True RMS multimeter is for electricians, technicians, engineers, and service personnel. Comes with Bluetooth connectivity and mobile app support for Android and iOS devices. Real-time measurement sharing and remote track readings from a safe distance.

CAT III 1000 V / CAT IV 600 V safety rated with 6000 count display. Features, AC+DC measurements, make it easy to calculate real time power dissipation.

Its Low-Z mode ensures a low impedance input to circuits under test, reducing false readings caused by ghost voltages.

Continuity function offers both audio and visual feedback.  The diode function to test diodes and semiconductor junctions.

Tested to 2m drop and IP57, the AVO840 with its features and durability make it ideal for professionals in the field of electrical work.

APPLICATION

The AVO840 is an excellent choice for test and measurement, industrial maintenance, industrial, electrical and safety. The AVO840 has all the features you need plus more for maintenance and fixing problems quickly thanks to its precision, reliability, and ease of use.

The AVO840 is the preferred solution for professional technicians, electricians, or facilities managers. Diagnose fault with ease from HVAC systems, presses, furnaces, CNC, robots to PCBAs

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The Megger AVO850 True-RMS Digital Multimeter is a top-tier instrument designed specifically for electricians, technicians, engineers, and service personnel. This multimeter features advanced capabilities and a user-friendly interface, making it a preferred choice for both industrial and laboratory applications.

Key Features

• True-RMS Measurement: The AVO850 provides true-RMS measurements, ensuring accuracy for both AC and DC voltages. With a high precision rating of ±0.05%, users can trust the data collected for critical decision-making.
• Safety Rated: Rated for CAT IV 600 V and CAT III 1000 V, the AVO850 ensures user safety across a range of applications. This makes it suitable for use in high-risk environments without compromising on performance.
• Colour Display: The multimeter boasts a 320 x 240 TFT colour display, providing clear visibility even in challenging lighting conditions. This feature enhances usability, allowing easy interpretation of measurements.
• Bluetooth Connectivity: One of the standout features of the AVO850 is its Bluetooth capability, enabling users to connect with mobile devices. This functionality allows for the safe collection of live data readings, which can be shared in real time via a dedicated app. Both Android and iOS devices are supported.
• Datalogging and Graphing: The AVO850 supports advanced data logging and graphing functionalities. Users can store measurements for future reference and analysis, making it a valuable tool for regular inspections and troubleshooting.
• Multi-functional Measurements: The AVO850 isn’t just a voltmeter; it supports 4-20mA process loop measurement with percentage readings, continuity testing with audible and visual signals, and diode function testing. It also allows for temperature measurements, covering a wide range of electrical diagnostic needs from just one tool.

Applications

The AVO850 is ideal for a variety of applications, including but not limited to:

• Electrical Maintenance: Use the AVO850 for routine checks and troubleshooting electrical systems, ensuring operational safety and efficiency.
• Installation Testing: Perfect for verifying installations in both residential and commercial settings, helping to prevent future issues.
• Calibration: Its precision makes it suitable for calibrating other equipment and sensors in laboratory environments.
• Educational Use: The robust feature set and user-friendly design make the AVO850 a great tool for educational institutions teaching electronics and electrical engineering.

Conclusion

The Megger AVO850 True-RMS Digital Multimeter is an indispensable tool for professionals in the electrical field. With its high accuracy, advanced features, and user-friendly design, it delivers reliability and efficiency. Whether you’re performing complex measurements or simple checks, the AVO850 stands out as a premium choice. Invest in the AVO850 for unmatched performance and precision in your electrical applications.

Explore further and purchase your Megger AVO850 today to elevate your measurement capabilities.

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The Megger AVO410 TRMS digital multimeter is an essential tool designed specifically for contracting electricians and users who require precision in a diverse range of applications. This reliable instrument combines functionality and usability, ensuring accurate measurements while meeting industry safety standards. With a rugged design and intuitive features, it is the ideal multimeter for both professional and DIY users.

Key Features

• 6000 Count Backlit Digital Display

The AVO410 is equipped with a clear 6000 count backlit digital display, allowing users to read measurements easily in all lighting conditions. This feature significantly enhances usability on job sites or in dimly lit environments.

• True RMS Reading on AC Mode

The multimeter provides true RMS readings for AC voltage and current, ensuring accurate measurements in a variety of situations. This is especially important for users dealing with complex waveforms, as traditional average responding meters can yield inaccurate readings.

• Comprehensive Measurement Ranges

The AVO410 supports a wide range of measurements, including:

• Voltage: 600 mV to 1000 V DC and 600 mV to 750 V AC
• Current: 600 µA to 10 A AC/DC
• Resistance: Up to 60 MΩ
• Frequency and Capacitance Ranges

This extensive range of capabilities means the AVO410 can accommodate various electrical tasks, from troubleshooting to routine maintenance.

• Safety Rating

With a CAT IV 600 V safety rating, the AVO410 is built for industrial applications and meets stringent safety standards. This rating ensures that the multimeter can safely handle electrical testing in hazardous environments, providing peace of mind for users.

• Durable Construction

The device’s slim, compact case is protected by a robust rubber holster, making it resistant to the rigours of industrial settings. This ensures that the multimeter can withstand drops, impacts, and harsh conditions while maintaining functionality.

User-Friendly Design

The thoughtful design of the AVO410 includes an ergonomically shaped case and strategically positioned function switch and buttons. This design allows for comfortable single-handed operation, making it suitable for use in confined spaces or when multitasking. Its user-friendly nature means you won’t need to constantly refer to the user guide, allowing for increased productivity and efficiency.

Additional Accessories

The Megger AVO410 comes with a silicone cable and GS38 compliant shrouded tips on the prods, providing added safety and versatility to your measurements. These accessories enhance the functionality of the multimeter, ensuring that you have the tools necessary for a variety of electrical tasks.

Conclusion

In conclusion, the Megger AVO410 TRMS digital multimeter is a versatile, reliable, and robust tool suitable for both professionals and enthusiasts in the electrical field. With its comprehensive measurement capabilities, safety features, and user-friendly design, it stands as a valuable asset for anyone looking to perform accurate electrical measurements effectively. Whether you’re working on-site or at home, the AVO410 is sure to meet your multimeter needs and exceed your expectations.

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The Megger AVO215 is a versatile and robust true RMS multimeter designed for both professional and personal use in demanding environments. Its compact, pocket-sized design makes it suitable for easy transportation, while its multitude of features ensures seamless measurement of voltage, current, resistance, capacitance, and more. Whether you are an electrician, technician, or an enthusiast looking to handle electrical tasks with confidence, the AVO215 is an ideal choice.

Key Features

• True RMS Measurement: This multimeter measures both AC and DC voltages up to 600 V, ensuring that you get accurate readings under all scenarios.
• Current Measurement Capabilities: With the ability to measure currents up to 10 A, and a temporary overload capacity of 20 A for short durations (30 seconds max), this instrument covers a wide range of applications.
• High Precision and Resolution: The AVO215 offers a 4000 count resolution, allowing you to obtain precise results for various electrical metrics.

Functional Versatility

The AVO215 is equipped with a comprehensive range of additional functions:

• Resistance Measurement: Measures from 0 to 40 MΩ, which is essential for verifying circuit integrity.
• Capacitance Measurement: Offers readings from 0 to 4000 µF, beneficial for testing capacitors in different devices.
• Frequency Measurement: Capable of measuring frequencies from 10 Hz to 10 kHz, allowing for the analysis of oscillating signals.
• Duty Cycle Measurement: Displays the ratio of time that a circuit is energised compared to de-energised, expressed as a percentage, which is crucial for pulse width modulation (PWM) evaluations.

User-Friendly Functions

Ease of use is at the forefront of the AVO215’s design:

• Auto or Manual Ranging: Users can select auto-ranging for convenience or choose manual range selection for more control over measurements.
• MAX/MIN Function: This function allows the user to capture maximum and minimum readings effortlessly, eliminating the need for constant display monitoring.
• Data Hold Feature: This function enables you to freeze a reading on the display for easier reading and note-taking.

Built-in Safety and Convenience Features

The AVO215 complies with CAT III 600 V safety standards, making it a reliable choice for professionals working with electrical systems. Additionally, it comes with:

• A built-in flashlight that enhances visibility in low-light conditions, ensuring you can work safely and efficiently.
• An audible continuity function complemented by a buzzer for quick verification of circuit paths.
• A diode test feature which allows thorough testing of semiconductor junctions.

Package Contents

The AVO215 is shipped with everything you need to get started:

• DMM lead set for immediate usage.
• A protective carry pouch for secure transport and storage.

Conclusion

The Megger AVO215 is more than just a multimeter; it’s a comprehensive electrical measuring tool that combines accuracy, functionality, and user convenience. Suitable for a wide spectrum of applications, from industrial environments to DIY projects, this durable multimeter is an essential asset for anyone involved in electrical work. Invest in the Megger AVO215 today and ensure precision in every measurement you take.

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