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Multifunction testers or MFTs are handheld versatile devices used to verify the safety of electrical installations in domestic, commercial, and industrial settings. These installation testers are designed to streamline and simplify electrical testing processes and ensure that fixed wiring is safe and correctly installed to meet relevant local standards and safety requirements

Multifunction Testers are integral to compliance with the 18th Edition of the Wiring Regulations (BS 7671). They enable electricians to meet the stringent testing requirements outlined in the 18th Edition, ensuring that electrical installations are safe, reliable, and in line with the latest industry standards. Additionally, MFTs often conform to other international standards, enhancing their credibility and usability in diverse global contexts.

MFTs are ideal for testing a range of electrical parameters such as voltage, earth resistance, loop impedance and more. Many multifunction testers offer additional features such as Bluetooth, allowing you to store and transfer data from the device to a computer or mobile device. Here at RS, we have sourced multifunction test meters from leading brands such as Fluke, Megger, Gossen Metrawatt, RS PRO, and many more. You can learn more in our [multifunction testers guide](/web/content/discovery/ideas-and-advice/best-multifunction-tester).

### What are Multifunction testers also known as?

MFTs are also commonly called Electrical Testers and Multifunction Installation Testers. However, even though they use slightly different names they all essentially do very similar things and due to their nature can be used in a range of different situations. It is important to check which tests the MFT can perform before you purchase one.

### Uses of Multifunction Testers

Multifunction testers perform a variety of tests, including:

- Insulation-continuity tests: Diagnose breakdown of the insulation in various parts of the electrical system such as wires, transformers, and motors. The quality of insulation is critical in ensuring uninterrupted and safe functioning of electrical circuits.
- Checking RCD devices: RCDs are designed to disconnect quickly to mitigate the harm caused by electric shock and to avoid current leaks that may lead to fire and other dangerous situations.
- Loop testing: A quick, convenient, and specific method of evaluating an electrical circuit's ability to engage protective devices (circuit breakers, fuses, RCDs).
- Resistance measurement of grounding systems: Verification tests to ensure that a system's resistance is low enough to provide protection to people, equipment and structures.
- Earth continuity tests

### Application

Multifunction testers are used by electrical engineers for electrical installation work to verify and maintain electrical installations and that the required safety regulations have been reached in both commercial and industrial applications.

### What is the difference between multimeters (multi testers) and multifunction testers?

They are both electronic measuring instruments. The multimeter measures basic electrical parameters such as voltage, current and resistance. A multifunction tester is tailored for comprehensive testing of electrical installations ensuring compliance with industry regulations and standards such as the Wiring Regulations (BS7671).



Discover precision with RS Multifunction Testers (MFTs). Ensure safety and compliance effortlessly with our Electrical Installation Testers offers.

Multifunction Testers (MFTs) | Electrical Testers | RS

Multifunction Testers

Buy Fluke multifunction testers. Browse our latest Fluke multifunction testers offers. Next day delivery available.

Fluke Multifunction Testers | RS

Fluke multifunction testers (MTFs) are designed to perform a variety of tests on electrical systems and equipment, and they are widely used by electricians, electrical engineers, and technicians. Fluke MFTs can perform several tests in one device and can measure parameters such as voltage, current, continuity, earth resistance and insulation resistance making them a very versatile tester in electrical applications.Fluke multifunction testers are highly accurate and reliable and provide precise measurements of electrical parameters which helps to ensure that electrical systems are operating safely and efficiently. Some models are equipped with Fluke Connect technology which allows wireless data transfer and remote operation. They are often used by professionals and the Fluke range of MFTs include small basic units to advanced feature rich models.

Buy Megger Multifunction Testers. Browse our latest Megger Multifunction Testers offer. Free Next Day Delivery!

Megger Multifunction Testers | RS

In a world where electrical safety and efficiency take centre stage, these Multifunction Testers from Megger are your trusted companions. These powerful tools are engineered to simplify your testing and inspection needs, ensuring your electrical systems are not only compliant but also reliable.With user-friendly interfaces and cutting-edge technology, these Multifunction Testers offer a comprehensive range of tests, from continuity and insulation resistance to RCD and loop testing, all with precision and accuracy. They are designed for the real world, built to withstand tough conditions, and are compact for easy portability.Ensure safety and compliance with Megger, your partner in electrical testing. Join countless professionals who rely on Megger Multifunction Testers to get the job done efficiently and accurately, every time. Trust in the name that's synonymous with excellence in electrical testing.

Enhance automotive diagnostics at RS with our  automotive electrical testers. Ensure efficient performance and pinpoint issues effortlessly. Explore now!

Automotive Electrical Testers | RS

Automotive electrical testers are devices designed to diagnose and troubleshoot electrical issues in vehicles. They are used by automotive technicians, mechanics, and enthusiasts to inspect and test various electrical components in a vehicle's electrical system.These testers help identify problems, check the integrity of electrical circuits, and ensure that all electrical components are functioning properly including:<ul><li>Checking the battery voltage</li><li>Testing fuses</li><li>Measuring resistance in circuits</li></ul>

Browse our range of Fluke T5 Multifunction Testers at RS, a compact powerhouse for electrical safety

T5 Multifunction Testers | Fluke MTF | RS

The Fluke T5 series are reliable and accurate instruments used for electrical testing. These devices offer a compact yet powerful multifunction tester that is ideal for a wide range of electrical applications.The T5 is designed with ease of use in mind, featuring a clear and intuitive display, simple controls, and a rugged construction to withstand the rigors of daily use. The test leads store neatly within the unit, ensuring compactness and convenience. With its comprehensive range of features, precision, and ease of use, the Fluke T5 multifunction tester is an indispensable tool for anyone working with electrical systems. Its compact size and durable construction make it a practical choice for both professional and personal use.The Fluke T5 combines three essential electrical testing functions into a single, user-friendly tool:<ul><li>Voltage Testing - quickly and accurately identify the presence of voltage in AC and DC circuits.</li><li>Continuity Testing - ensures the integrity of electrical connections by detecting the presence of a complete circuit path.</li><li>Current Testing - measures current up to 100A without breaking the circuit using the innovative OpenJaw&trade; design.</li></ul><h2>Additional Features include:</h2><ul><li>Auto-ranging - selects the appropriate range for the input voltage, eliminating the need for manual adjustments.</li><li>Beep Function - confirms the presence of continuity, making it easy to identify faulty connections.</li><li>Backlight - ensures clear visibility in dimly lit environments.</li><li>Battery Indicator - keeps you informed of the tool's power status, preventing unexpected power loss.</li></ul>

Enhance solar system performance at RS with the Fluke SMFT-1000 Multifunction PV Tester Kit, featuring an I-V Curve Tracer. Reliable testing in PV installations.

Fluke SMFT-1000 | RS

The Fluke SMFT-1000 Solar Multifunction PV Tester and Performance Analyser is a comprehensive tool designed for solar professionals to assess the performance and integrity of photovoltaic (PV) systems.This comprehensive tool that can be used for a variety of tasks, including I-V curve tracing, performance analysis, string resistance measurement, ground resistance measurement, insulation resistance testing, continuity testing, diode testing, data logging and analysis.The SMFT-1000 is a user-friendly tool with a large, clear display, intuitive menu navigation, and wireless connectivity for data transfer and remote monitoring. It is compliant with IEC 62446-1 standards and comes with a range of accessories, including MC4 cable leads, an irradiance meter, and a carrying case.

Fluke SMFT-1000

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