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This section provides an overview for circuit testers as well as their applications and principles. Also, please take a look at the list of 39 circuit tester manufacturers and their company rankings. Here are the top-ranked circuit tester companies as of December, 2024: 1.Keysight Technologies, 2.TEGAM Inc., 3.Optima Technology Associates, Inc..
Table of Contents
Circuit testers are tools used to measure the current, voltage, resistance, etc., of in-vehicle electrical components and batteries. Unlike current detection testers, which can only tell whether current is flowing, circuit testers can measure even numerical values such as measured current and voltage. There are two types of testers: analog testers that display these values with a needle and digital testers that show the numerical values on a monitor.
Circuit testers are used primarily for vehicle maintenance. They not only detect the energized positive wire but can also identify the negative wire and check current consumption. This capability is essential when installing a fuse of the appropriate amperage, ensuring safe and efficient operation. Additionally, circuit testers are valuable tools for verifying that relays and switches do not exceed their allowable current values.
Circuit testers are designed for convenience and ease of use, featuring a large rotary switch with 2000 counts and Japanese notation. They offer a manual DMM with a wide measuring range and include a backlight for measurements in dark environments. The testers' DC10A range is equipped with an LCD for clear visibility. They automatically detect and measure voltage and resistance and can locate live wires in walls and ceilings. Their large, clear display ensures easy readability.
A single circuit tester unit is versatile enough for various electrical system checks, including measuring engine RPM for both direct ignition and high-tension cord types. The ultra-thin, lightweight design of the DMM makes it easily portable, and the color-coded range and switch system enhance user-friendliness. Furthermore, the holster with a test lead fixing function is convenient for measurements in challenging environments.
These testers are capable of performing a wide range of measurements, such as battery voltage, alternator charge current, and dark current. They are also useful for water temperature sensor checks, continuity tests, diode tests, noise prevention capacitor checks, and various resistance checks. Additionally, their ability to measure temperature makes them suitable for tasks like checking the temperature of air conditioner vents.
*Including some distributors, etc.
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TEGAM, established in 1979 and headquartered in Geneva, Ohio, USA, stands as a manufacturer and provider of advanced test and measurement solutions. The company serves industries such as electronics, telecommunications, and aerospace. Its product line encompasses precision measurement tools, temperature and humidity measurement devices, and RF power sensors, addressing the needs of sectors that prioritize precise measurements. TEGAM's quality is evident through its ISO 9001 certification and industry awards. American Association for Laboratory Accreditation (A2LA) has also accredited this company for its specific calibrations listed on Certificate Number 2018.01.
EXAIR was incorporated in 1983 and based in the suburbs of Cincinnati, Ohio. EXAIR is a manufacturer of compressed air-operated products to solve problems in industrial plants. Customer solutions EXAIR addresses include cooling, cleaning, coating, conveying, drying, industrial housekeeping, static elimination, and optimization. EXAIR products include vortex tubes, air amplifiers, air knives, air-operated vacuums, ionizing products, air wipes, static eliminators, vacuum generators, vortex tubes, cabinet coolers for standard and hazardous location, cold gun air coolant systems, and other accessories.
Grace Technologies is a manufacturer of electrical safety devices and predictive maintenance tools originally founded as Grace Engineering in 1993 before rebranding in 2020. Based in Davenport, Iowa, the company offers various panel interface connectors, voltage indicators or permanent electrical safety devices (PESDs), and IIoT smart sensor devices under the brand names GracePort, GracePESDs, and GraceSense. Grace Technology products are primarily used by clients in the manufacturing, energy, and infrastructure sectors, including by metal fabricators, water treatment facilities, and power plants.
IDEAL Electrical, originally founded in 1916, is part of IDEAL INDUSTRIES, INC., is a manufacturer of wire connectors, tools, conduit benders, fish tapes and countless other products based in America. More than 6,000 tools and supplies make up the company's family of products with a state-of-the-art delivery system around the world. Their complete line includes Twist-On Wire Connectors, Push-In Wire Connectors, Grounding Wire Connectors, DataCom Wire Connectors, among others. Their line of electrical wire connectors is built to provide safe and dependable solutions for every application, whether it’s residential, commercial or industrial.
Cal-Van & Horizon Tool Inc., established in 1980 and headquartered in Greensboro, North Carolina, USA, is a manufacturer of various automotive and mechanics tools. The company's product range includes multiple tools and equipment for professional mechanics, automotive technicians, and enthusiasts. It holds ISO 9001 certification, verifying its tools are built to rigorous standards. Its precision tools offer benefits such as enhanced efficiency, accuracy, and durability, resulting in cost-effective and stable solutions for various applications within the automotive and mechanical industries, serving professionals and DIYers alike with the comprehensive range of products.
Greenlee Textron, Inc., founded in 1862, operates as a significant manufacturer in the industrial and electrical tool industry. The company provides a range of products and solutions related to warehousing, transportation, and general storage. As a key contributor in the machinery manufacturing sector, Greenlee Textron, Inc. offers power-driven hand tools and other general purpose machinery, addressing various industrial needs. The company's business in multiple locations, including Rockford, IL, and Southaven, MS, underscores its run to serving diverse sectors and fulfilling the requirements of professionals worldwide.
Headquartered in Everett, Washington, Fluke is an American-born company operating since 1948. Fluke offers a variety of testing equipment including digital multimeters, thermal cameras, solar PV testing equipment, thermometers, oscilloscopes, leak detection devices, as well as testing-equipment related accessories. Fluke offers direct online sales.
Snap-on Incorporated, a company founded in 1920, based in Kenosha, Wisconsin, USA, is a manufacturer and marketer of high-end tools and equipment for professional use in the transportation sector. The company provides a range of products, including wrenches, sockets, screwdrivers, pliers, diagnostic tools, power tools, and storage devices. These items are designed to satisfy the requirements of customers in the automotive, heavy-duty, equipment, marine, aviation, and railroad industries. It also provides customers with digital printing, graphic design, and engineering support services.
Phase Dynamics, established in 1992 and based in Richardson, Texas, USA, is a manufacturer and supplier of precision water cut analyzers for the petroleum industry. The company's product range includes water-cut analyzers (low range, mid-range, full range, high range, pro-cut, razor), ppm analyzers, ccm multiphase meters, fiscal skid analyzers, and products under the marine division. These products are utilized for real-time measurement of fluids in pipelines, particularly in the petroleum sector. It serves industries such as oil production and processing. The company also offers services like FAQ support, wiring diagrams, enclosure drawings, and flow-through analyzer drawings.
Keysight Technologies, Inc. was founded in 1939 and headquartered in Santa Rosa, California. Keysight is a global developer and manufacturer of electronic design and test solutions to communications, networking, aerospace, defense, and government, automotive, energy, semiconductor, electronic, and education industries. Keysight’s communications solutions group solutions include electronic design automation software; radio frequency and microwave test solutions, hardware and virtual network test platforms and software applications, as well as optical laser source solutions. Keysight’s electronic industrial solutions group offers various design tools and verification tools. Keysight offers product support, technical support, and training and consulting services. It sells its products through direct sales force, distributors, resellers, and manufacturer's representatives.
Dorman Products, established in 1918 with headquarters in the USA, is a manufacturer and distributor of automotive aftermarket spare parts. The company's product portfolio includes intake and exhaust manifolds, automotive cooling products, harmonic balancers, fluid lines, fluid reservoirs, connectors, and many more. Dorman Products' products are sold under the Dorman brand and its sub-brands: OE Solutions, Help!, Conduct-Tite, and HD Solutions, through aftermarket retailers, regional and local warehouse distributors, specialty markets, and salvage yards. The company's replacement and upgrade parts are used in the motor vehicle aftermarket industry, serving vehicles that include passenger cars and light-, medium-, and heavy-duty trucks.
Established in 1994, Seika Machinery, Inc. (SMI) has provided production equipment and engineering support services for the electronics and manufacturing industries. As a subsidiary of Seika Corporation in Tokyo, the company has offices in Los Angeles, San Francisco, and Atlanta, serving markets in the US, Canada, Mexico, and South America. Their services include sales and support for machinery and automation solutions, technical services, and local procurement for North American customers. The company also exports machinery, such as SMT and QA products to Asia, Japan, and Europe, leveraging its vast network to create new business opportunities.
Pep Boys, founded in 1921 and currently a subsidiary of Icahn Enterprises, is an American supplier headquartered in Bala Cynwyd, Pennsylvania, providing automotive aftermarket services. The company offers various services in over 1,000 locations in the United States and Puerto Rico, all conducted by Automotive Service Excellence (ASE)-certified technicians. It also delivers routine maintenance and safety-related services in residential or workplaces with its Pep Boys Mobile Crew service. The company further provides the Pep Boys Towing service to transport vehicles to the nearest Pep Boys location for repair. It also offers the Pep Boys Corporate Fleet service for fleet companies.
Founded in 1940, Kyoritsu has an 80 year history as a customer-focused organization specializing in multimeters. Kyoritsu provides analog multimeters as well as digital multimeters with and without clamps offering many varieties of measurement.
Yokogawa Test & Measurement Corporation was founded in Japan in 1954. Yokogawa currently serves a wide array of industries including the aerospace, automotive, consumer electronics, semiconductor and telecommunications industries with both hardware and software solutions. Among Yokogawa’s suite of products are oscilloscopes, voltage probes, power analyzers and meters, data acquisition tools, optical test equipment, a wide variety of handled meters, calibrators, and testers; analog instruments, and manometers.
Ono Sokki Co. Ltd., founded in 1954 and based in Yokohama, Japan, is a manufacturer, distributor, and supplier of electronic measuring instruments and control systems. Its products include sound level meters, vibration meters, and FFT analyzers, utilized in research and development, quality control, and by production line engineers, particularly in the automotive industry. The company was the first to be designated by the government as a producer of sound level meters in Japan and also obtained ISO 14001 certification in 1997.
Founded in 1944, Rion Corporation, based in Tokyo's Kokubunji City, is a precision equipment manufacturer. It specializes in three main sectors: environmental measurement instruments for noise and vibration analysis, medical equipment for hearing tests and hearing aids, and particle counters for semiconductor and pharmaceutical cleanliness measurement. Rion boasts significant market share in Japan, driven by its advanced technology and service excellence. In environmental measurement instruments, it offers noise meters, vibration meters, and frequency analyzers. In 2022, Rion expanded its environmental division by acquiring Norsonic AS, a prominent noise meter manufacturer. The company caters to diverse customers worldwide, including government agencies, research institutions, manufacturing industries, and R&D departments. With eight subsidiary companies (five in Japan and three overseas) and a global agent network spanning approximately 60 countries, Rion Corporation maintains a strong global presence.
Amprobe, founded in Everett, WA, in 1948 is a manufacturer of Ultrasonic Leak Detectors. The company's product portfolio includes battery testers, Electrical and HVAC Test and Measurement Tools, Digital Multimeters, Clamp Meters, and Wire Tracers & Cable Locators. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. They also provide services including product selection, installation, preventative maintenance, troubleshooting, and repair.
Milwaukee Tool, established in 1924 and headquartered in Brookfield, Wisconsin, USA, is a manufacturer of heavy-duty power tools, hand tools, and accessories The company offers a wide array of accessories, such as bits, blades, and sockets, to complement their cordless and corded power tools, including hammer drills, saws, and wrenches. Milwaukee Tool's products are utilized by construction workers, mechanics, electricians, and contractors for various tasks, including drilling, sawing, fastening, vehicle repairs, electrical installations, and construction projects.
Nex Flow Air Products Corp. was established in 1993 and based in Ontario, Canada, as a manufacturer of compressed air-operated products and accessories. Its products include air amplifiers and knives, air-operated conveyors, safety air blowoff guns, and air optimization products. It also manufactures compressed air accessories like stainless steel shim kits and temperature sensing labels. Its products comply with NEMA standards and are utilized for pharmaceutical, metalworking, general manufacturing, and automotive industries across North America, Thailand, Malaysia, India, and Indonesia. The company partnered with companies like Samsung, Ford, Nestle, and Toyota. It acquired NEMA 12, NEMA 3R, and NEMA 4-4x certifications.
Hoyt Electrical Instrument Works Inc., established in 1904, is a manufacturer of analog and digital panel meters, transformers, shunts, switches, and personal safety devices, located in Penacook, New Hampshire, the United States. The company’s products are designed to meet and exceed industry standards. It offers a wide range of test and measurement instruments, making its a comprehensive solution for customers’ needs. It is not only an analog panel manufacturer, but also has evolved to provide value-added custom solutions that keep the world spinning in the right direction.
Seica S.p.A., founded in 1986 and based in Strambino, Italy, is a manufacturer of test equipment, inspection, and selective soldering systems. Its products include in-circuit testers, laser selective soldering systems, and flying probe testers, and it serves three main groups of customers, including industrial electronics manufacturing, mil-aero, and printed circuit board manufacturing. It has offices in countries like the USA, China, and Germany. All the company’s products are based on its software and hardware platform, VIVA Integrated Platform. If required, the company’s systems can also be controlled by alternative software packages such as LabWindowsTM/CVI, LabviewTM, and TestStandTM.
Bosch Automotive Service Solutions Inc. founded in the year 1866, and based in Stockport, United Kingdom, is a manufacturer and supplier of diagnostic devices. Their product portfolio includes a diverse range of diagnostics systems, tachs, gauges, and auto parts. The company offers quality products that are handy, precise, professional, and automotive diagnostic devices designed for everyday use in workshops. The products are used in various industries which include transportation, vehicles, agriculture, and construction for diagnosing and repairing solutions.
Lisle Corporation, founded in Clarinda, IA, in 1903 is a manufacturer of automotive tools, mechanic's creepers and lubrication & tire products. The company's product portfolio includes Pickup Tools & Mirrors, Plug Gappers & Feeler Gauges, Pullers & Installers, Scrapers and Specialty Tool Displays. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company provides services such as Product Selection Guidance, Engineering Support, and Custom Manufacturing.
OTC Tools, is a company founded in the year 1934, based in Minnesota, USA, as a manufacturer and supplier of tools and equipment. Their product portfolio includes service jacks, jack stands, pullers, motorcycle tools, slide hammers, suspension tools, scan tools, heavy-duty, and TPMS. The products are used in multiple industries which include electronic diagnostics, shop equipment, and inventory supplies. The company also provides customer service, technical support, promotions, and locations of best buy.
ACO Co., Ltd., established in 1972 and headquartered in Hachioji-shi, Tokyo, Japan, is a manufacturer, distributor, and exporter of sound & vibration measuring instruments and sensors. The company manufactures high-temperature specification, preamplifier integrated, and measurement condenser microphones in various sizes including, ⅛ inch, ⅙ inch, ¼ inch, ½ inch, and 1-inch, which are utilized in construction and medical industries. ACCO also manufactures various vibration products including vibration level meters, acceleration pickups, vibration calibrators, as well as acoustic products such as ear simulators, windscreens, sound calibrators, windscreens, and infrasonic meters & sensors.
Kaise Corporation, established in 1955 and headquartered in Ueda City, Nagano Prefecture, Japan, is a manufacturer and supplier of electronic measuring instruments. Its product lineup includes battery checkers, jump starters, code readers, as well as oscilloscopes, and circuit testers, primarily used in automotive maintenance. Additionally, the company offers digital multimeters, clamp meters, and insulation resistance meters. Its SK-8550 Battery Checker received the 2016 Maintenance Support Award at the Automotive Newspaper Accessories Awards.
Sonic Tools USA, is a division of Dutch-based company Sonic, established in 1995, is a manufacturer and supplier of hand tools and toolbox solutions based in Auburn, Alabama. The company’s product portfolio includes complete toolsets, toolboxes, modular cabinets, sonic foam systems, and portable tool solutions used in the automotive, aviation, and manufacturing industries. The company also offers hand tools such as pry bars, torque wrenches, sockets, hex keys, and wrenches including ring, adjustable, flare nut, hinged, and combination wrenches.
CTA Manufacturing, originally named Classic American Tools, founded in 1978, and headquartered in Carlstadt, New Jersey, USA, is a manufacturer and a distributor of automotive specialty tools. Its product line encompasses diverse automotive specialty tools, which are categorized into offerings such as engine tools, brake tools, oil & exhaust tools, suspension tools, and body & interior tools. These tools play essential roles in engine repair, brake system maintenance, oil changes, suspension system repair, and car body and interior upkeep, meeting the diverse needs of professionals in the automotive service sector.
Mac Tools, founded in Westerville, OH in 1938 is a manufacturer of hand tools, power tools and related accessories. The company's product portfolio includes Hex and Torx Keys, Screwdrivers and Bits, Pliers, cordless tools and circuit testers. The company serves markets including Medical and Healthcare, Aerospace and Defense, Consumer Goods, Industrial Manufacturing and Construction and Building. The company has Distributors and Franchisees in the United States, Canada, Europe and Japan.
Klein Tools is a fifth-generation family-run producer of hand tools founded in 187 and headquartered in Lincolnshire, Illinois. Klein Tools sells worldwide directly and through distributors. Klein Tools has a family of companies under its brand including Alco, Civitella, Mumme Tools, Tulmex, and Wattmaster. Klein Tools serves several industries including construction, HVAC/R, plumbing, telecom, municipal, and industrial. Some of the tools Klein Tools produces include non-contact voltage tester bens, multi-bit screwdrivers, digital circuit breaker finders, advanced circuit tracer kits, and multi-bit electronics screwdrivers.
Inspector Tools, founded in 1999 and based in Ventura, California, is a distributor and supplier of test equipment catering to sectors such as facility maintenance, building inspection, and energy conservation. The company maintains a diverse inventory featuring products from over 20 brands, including Extech Instruments, Met One Instruments Inc., and General Wire Spring Company. Offerings range from home inspection kits to carbon monoxide detectors and infrared cameras. Inspector Tools provides customers with an online catalog showcasing its entire product range. Additionally, customers can create digital accounts for faster checkouts and access to order history.
Matco Tools Corporation, founded in 1946 and based in Ohio, United States, manufactures professional equipment, storage and tools for automobiles and other industries. The company manufactures a range of electric tools, diagnostic tools, air tools, and hand tools such as screwdrivers, wrenches, gauges and more. Matco sells its automotive tools and products directly to its customers or through a network of independent franchised distributors. Matco Tools are distributed in Canada, Puerto Rico, and all 50 states of America.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Keysight Technologies |
6.4%
|
| 2 | TEGAM Inc. |
5.7%
|
| 3 | Optima Technology Associates, Inc. |
4.5%
|
| 4 | Horizon Global Corporation |
4.5%
|
| 5 | Dorman Produts |
4.5%
|
| 6 | Pep Boys |
3.8%
|
| 7 | Grace Technologies |
3.8%
|
| 8 | FLUKE Corporation |
3.8%
|
| 9 | CTA Manufacturing |
3.2%
|
| 10 | Greenlee |
3.2%
|
Derivation Method
The ranking is calculated based on the click share within the circuit tester page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
15 | 65.2% |
|
Japan
|
7 | 30.4% |
Italy
|
1 | 4.3% |
24 products found
24 products
Kyoritsu Test System Co., Ltd.
370+ people viewing
Last viewed: 12 hours ago
Very Fast Response
■Industrial PC (FA PC) adopted The measurement section and PC section of the tester unit, which were previously integrated, have been separated to ...
Sanwa Electric Meter Co., Ltd.
30+ people viewing
Last viewed: 3 hours ago
■Palm size including hard case ・Mirror scale adopted on the scale plate ・Equipped with basic measurement functions for DC voltage, AC voltage, DC...
Newly Tsuchiyama Co., Ltd.
130+ people viewing
Last viewed: 11 hours ago
■Detect manufacturing defects of mounted boards using high-speed in-circuit system ・Capacitor: 10 times faster, resistor: 2 times faster (compared...
Takaya Co., Ltd.
290+ people viewing
Last viewed: 23 minutes ago
■Continuing to evolve testing capabilities This is a flying probe type in-circuit tester that reliably detects any defects on mounted boards with u...
Okano Electric Co., Ltd.
20+ people viewing
Last viewed: 4 hours ago
■Stable inspection and measurement speed. High value-added equipment unique to Pioneer Company An in-circuit tester that was introduced to the worl...
Kyoritsu Test System Co., Ltd.
20+ people viewing
Last viewed: 12 hours ago
Very Fast Response
■Industrial PC (FA PC) adopted The measurement section and PC section of the tester unit, which were previously integrated, have been separated to ...
Yagyu Shokai Co., Ltd.
40+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Features - Thin design makes it easy to clamp intricate wiring. - Drop-proof type that can withstand drops of 1m. ・CM3289 can accurately measure ...
Myzox Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
Very Fast Response
With auto hold function ■Features ・With auto power off function. -Integrated hard case.
Yagyu Shokai Co., Ltd.
20+ people viewing
Last viewed: 11 minutes ago
Very Fast Response
■Features - Equipped with data hold and relative functions. ・Since there is a built-in magnet on the back of the main unit, it can be attached to ...
Custom Co., Ltd.
320+ people viewing
Last viewed: 12 hours ago
Standard Response
4.0 Company Review
It is a feature of analog testa that it is easy to read the values that change in a short cycle. ・ Built -in magnet on the back. The main unit ...
Custom Co., Ltd.
310+ people viewing
Last viewed: 13 minutes ago
Standard Response
4.0 Company Review
It is a feature of analog testa that it is easy to read the values that change in a short cycle. ■ Multifunctional models that can measure decib...
Custom Co., Ltd.
10+ people viewing
Last viewed: 3 hours ago
Standard Response
4.0 Company Review
A scale plate with a mirror that reduces reading errors in measured values. ■Features ・With continuity buzzer ・Small, compact, simple operation ...
A and Day Co., Ltd.
350+ people viewing
Last viewed: 12 hours ago
Standard Response
9 functions including voltage, current, resistance, capacitor, frequency, diode check, continuity check, duty cycle measurement and non-contact vol...
4 models listed
Marvel Co., Ltd.
100+ people viewing
Last viewed: 31 minutes ago
■Features ・Card size of only 60g and thickness of 9.5mm ・The probe tip length is 15 mm and uses gold plating to reach deep into the outlet. ・Ful...
Hishin Co., Ltd.
20+ people viewing
Last viewed: 5 minutes ago
■Features ・Quick check up to AC/DC 12V. ・Discover short circuits and disconnections. - Comes with an insulating clip (ground with the clip and in...
Avant Co., Ltd.
90+ people viewing
Last viewed: 12 hours ago
This is a tester specialized in vehicle electrical equipment maintenance. Equipped with LCD display and LED light. Built-in circuit breaker provide...
Okano Electric Co., Ltd.
90+ people viewing
Last viewed: 38 minutes ago
■Features ・A variety of layout-free models (can be operated with a laptop) ・Easy to operate with a Windows program that retains traditional opera...
Okano Electric Co., Ltd.
70+ people viewing
Last viewed: 1 day ago
■Features ・A variety of layout-free models (can be operated with a laptop) ・Equipped with phototransistor ON test function as standard ・Easy to ...
Okano Electric Co., Ltd.
90+ people viewing
Last viewed: 9 hours ago
■Works with Windows 7 and 10 Microsoft Windows 7,10 is used as the OS. Provides system stability, enhanced security, and networking capacity. ■Rea...
Japan Jido Seiki Co., Ltd.
50+ people viewing
Last viewed: 17 minutes ago
The batteries loaded in the hopper are taken out one by one and measured. After measuring the battery, it is determined whether the measured value ...
Okano Electric Co., Ltd.
50+ people viewing
Last viewed: 1 day ago
■Summary ・Function tester with automatic display inspection function using CCD camera ・Can identify various display patterns of LCD/LED ・Compati...
