How to Buy a Voltage Tester: A Comprehensive Guide

Your Guide to buying the best Voltage Tester


A voltage tester is an essential tool for any electrician or DIY enthusiast. It's used to measure the voltage of an electrical system to ensure it is within a safe operating range. This buying guide will provide information on the different types of voltage testers available, what features to look for when making a purchase, and tips on how to use the device safely. It will also offer advice on how to select the right voltage tester for your needs and budget. With this guide, you'll be able to make an informed decision when it comes to buying a voltage tester.

Key features

  1. Voltage Range: Voltage testers should be chosen based on the desired voltage range. Consider the range of voltages you need to test (AC or DC) and make sure that the voltage tester you purchase covers the full range.
  2. Accuracy: Ensure that the voltage tester you purchase is accurate and can detect small differences in voltage. Check the manufacturer’s literature for information regarding accuracy.
  3. Size and Weight: Consider the size and weight of the voltage tester you purchase. If you will be using the voltage tester in difficult to reach areas, a lightweight device with a slim body may be the best option.
  4. Display: Look for a voltage tester with a clear, easy to read display. Some voltage testers have backlit LCD displays that make it easier to read the results of the measurements.
  5. Safety: Choose a voltage tester that is rated for safe use. Make sure the tester you purchase is designed to protect the user from electric shocks and that it complies with the relevant safety standards.
  6. Durability: Look for a voltage tester that is built to last. Check the manufacturer’s literature for information regarding expected lifetime and look for voltage testers with features such as rubberized bodies and shockproof construction.

See the most popular Voltage Tester on Amazon

Important considerations


  • Accurate Testing Results - Voltage testers allow for accurate testing of a device's electrical charge and current draw, ensuring that the appliance is functioning safely and correctly.
  • Portable - Most voltage testers are small and lightweight, making them easy to carry and use in any setting.
  • Safety - Voltage testers can help prevent the risk of electric shock by providing a quick and easy way to check the power levels of any appliance.
  • Ease of Use - Voltage testers typically have an easy-to-read display and simple controls, making them user-friendly for people with any level of experience.
  • Price - Voltage testers are usually available at a reasonably low price point, making them a cost-effective solution for a variety of testing needs.


  • False readings: Voltage Testers can sometimes provide false readings due to calibration issues, user errors, or a variety of other reasons.
  • Safety hazard: Voltage Testers can be dangerous when used incorrectly, so it is important to pay attention to safety instructions and always use appropriate protective clothing and equipment.
  • Cost: Voltage Testers can be expensive, depending on the features and brand that you choose.
  • Durability: Voltage Testers can be prone to wear and tear and may need to be replaced or recalibrated regularly.
  • Limited use: Voltage Testers are limited in their range of applications and may not be suitable for all tasks.

Best alternatives

  1. Multimeter - This is a handheld diagnostic tool that measures voltage, current, and resistance in electrical circuits.
  2. Circuit Tester - This is a device that plugs into an outlet and shows whether the circuit is energized and safe to use.
  3. Non-Contact Voltage Detector - This device detects the presence of AC voltage without making contact with the wire or other component.
  4. Insulation Resistance Tester - This device measures the insulation resistance of an electrical system and can detect electrical faults.
  5. Voltage Alert - This device monitors voltage levels and alerts the user when it reaches the set level.

Related tools, supplies, and accessories

  • Voltage Tester - A device used to measure the electric potential difference between two points in an electric circuit.
  • Insulated Gloves - Protective gloves used when working with potentially hazardous electrical current.
  • Voltage Meter - A device used to measure the voltage of an electrical circuit.
  • Test Leads - Electrical cables used to connect a voltage tester to a circuit.
  • Wire Strippers - A tool used to remove the insulation from electrical wires.
  • Test Probes - Small metal probes used with a voltage tester to measure the voltage of a circuit.
  • Safety Goggles - Protective eyewear used when working with potentially hazardous electrical current.

Common questions

  1. What is voltage testing? Voltage testing is a type of electrical testing used to measure the voltage of a circuit or device. It is done by measuring the voltage between two points in the circuit or device with a voltage tester. Voltage testing can be used to determine whether a circuit is functioning correctly or not.
  2. What types of voltage testers are available? There are two main types of voltage testers, analog and digital. Analog testers are typically used to measure AC or DC voltages and are equipped with a needle-type indicator or a meter. Digital testers are computerized and can measure a wide range of voltages and provide more accurate results.
  3. How do you use a voltage tester? To use a voltage tester, first connect the voltage tester to the circuit or device you want to test. Then, turn on the voltage tester and measure the voltage between two points in the circuit or device. Once the voltage has been measured, the tester will provide an indication of whether the voltage is normal or not.
  4. What safety precautions should I observe when using a voltage tester? When using a voltage tester, it is important to observe safety precautions to prevent injury or damage to the circuit or device being tested. Always be sure to unplug the device before testing, and make sure that all contacts are properly insulated. In addition, be aware of the voltage range of the tester and do not exceed it when measuring voltage.
  5. What features should I consider when buying a voltage tester? When buying a voltage tester, there are several features to consider. First, consider the accuracy of the tester, as well as the range of voltages it can measure. Additionally, look for testers with features such as auto-ranging and overload protection. Finally, think about the type of display you would prefer (analog or digital), as well as the size and design of the tester.


An interesting fact about voltage testers is that the first one was invented in 1820 by a British scientist named Edward Davy. He designed a device that could measure the electrical current of a battery. The device, which was made of copper wires and silver spikes, was able to detect if a current was present in a battery by emitting sparks from the wire when it was connected to a battery. This device was the first voltage tester and paved the way for modern voltage testers that are used today. Source

Disclaimer: This buying guide was not created by humans, and it is possible that some of it's content is inaccurate or incomplete. We do not guarantee or take any liability for the accuracy of this buying guide. Additionally, the images on this page were generated by AI and may not accurately represent the product that is being discussed. We have tried to convey useful information, but it is our subjective opinion and should not be taken as complete or factual.