Where to Buy Multimeters & AC Testers

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Klein Tools ET310 Digital Circuit Breaker Finder
Klein Tools
Item# KLT-ET310
The Klein Tools ET310 is a digital circuit breaker finder used to locate the correct circuit breaker in a panel to which an electrical outlet or fixture is connected. The Transmitter is connected to the electrical outlet or fixture in the circuit while the receiver is used to scan the breakers in the circuit panel. The Transmitter also features a GFCI outlet tester. Features: Quickly and accurately locate the correct circuit breaker in a panel corresponding to the circuit to which an electrical...
Our Price: $54.97
Availability: In Stock
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Extech MA-120 200 Amp AC/DC Mini Clamp Meter and Voltage Detector with Flashlight
Extech Instruments Corp
Item# EXT-MA-120
The Extech MA120 is a 200 Amp AC/DC mini clamp meter with built-in AC voltage detector and built in LED flashlight. The meter measures Frequency up to 1 kHz with 0.01Hz resolution, auto ranges with auto power off and data hold functions and has a CAT II 600 Volt safety rating. Features: Measures 200A AC Current up to 100mA resolution 3% basic ACA accuracy 0.7" (18mm) jaw opening; 300MCM cable size 2000 count LCD display Non-contact AC Voltage detector (120/240VAC, 50/60Hz) via clamp...
Availability: Usually Ships in 5-14 Days
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Triplett MM650 6000 Count True RMS High Performance Waterproof (IP67) Digital Multimeter with Lo Z
Triplett
Item# TRIPL-MM650
2 Options Available
The Triplett Model MM650 is a 6000 count high performance digital multimeter with True RMS readings to provide better accuracy when measuring non-sinusoidal or noisy waveforms. It offers a large variety of measurement features including AC/DC Voltage, AC/DC Current, AC/DC µA Current, Resistance, Temperature, Frequency, Capacitance, Continuity, and Diode Test. Additional features include 61-segment analog bargraph, backlit LCD, buttons and switch selector, Lo Z (impedance) mode for identifying...
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Our Price: $129.99
Availability: Usually Ships in 5-14 Days
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Klein Tools ET900 USB-A Digital Meter - 3 to 20V DC
Klein Tools
Item# KLT-ET900
The Klein Tools ET900 is a USB digital meter for common standard USB-A (Type A) ports including Qualcomm Quick Charge® ports. It accurately and reliably measures and displays the USB port voltage, current, capacity, energy, and resistance simultaneously. It can function with any USB-A port that has the ability to deliver power. It requires NO batteries as it draws power from the power source to function. Features: 3 to 20V DC; Current: 0.05 to 3A Continuously monitor up to...
Our Price: $17.99
Availability: Usually Ships in 5-14 Days
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Klein Tools ET910 USB-A Digital Meter and Tester - 3 to 20V DC
Klein Tools
Item# KLT-ET910
The Klein Tools ET910 is a USB digital meter and tester combination for most common USB-A ports, including Qualcomm Quick Charge° ports. It accurately and reliably measures and displays the USB port voltage, current, capacity, energy, and resistance simultaneously. It can also test the maximum current delivery capability of the USB port with built-in fixed loads so user need not connect to an external load. It will function with any USB-A port that has the ability to deliver...
Our Price: $48.99
Availability: Usually Ships in 5-14 Days
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Klein Tools RT310 AFCI/GFCI Outlet Tester
Klein Tools
Item# KLT-RT310
The Klein Tools RT310 is an electrical tester that tests the wiring condition at an electrical outlet, and inspects and checks AFCI and GFCI devices. It is designed for use with North American 120V electrical outlets. It can detect and identify common wiring faults. Includes 3 x 1.5V AAA alkaline batteries. Features: Detects the most common wiring faults in standard, AFCI, and GFCI electrical outlets Test AFCI devices by simulating arc fault conditions Test GFCI devices by simulating...
Our Price: $39.97
Availability: Usually Ships in 5-14 Days
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Bi-Directional USB-C Power Meter & Tester with OLED Display for Phones / Laptops / Tablets - Up to 240W
Unique Product Solutions
Item# USBCVAMETER240W
This USB-C Amperage and Voltage Tester manages to fit a lot of useful features into a sturdy little package. About the size of a USB flash drive, this bi-directional USB tester allows for full USB data passthrough while it monitors USB-C power and charging, measures voltage and amperage, even visualizes the directional flow of electrical current-all in real time. Connect the USB-C Amperage and Voltage Tester inline between a USB-C host system like a laptop, tablet, or cell phone and a charger...
Our Price: $33.86
Availability: Usually Ships in 5-14 Days
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Angel Guard 4008-048 Chameleon Clips Color Changing Overheating Alert
Angel Guard Products
Item# ANG-4008-048
Chameleon clips change color to alert the user that the cord is overheating. If the temperature of the cord reaches 110 degrees F, the Chameleon Clip changes color from green to orange warning the user to unplug the cord. Prevent electrical fires with an early warning from Chameleon Clips. Chameleon Clips easily attach to virtually any consumer and/or contractor electrical cord, including: Extension cords, power strips, large & small appliances and lamps Office, computer and gaming power cords Portable...
Our Price: $7.49
Special Price: $5.99
Availability: In Stock
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NTI ACVDRLY-515 AC Voltage Detector with Relay and NEMA 5-15 Plug
Network Technologies Inc
Item# NETT-ACVDRLY-515
The NIT ACVDRLY-515 ENVIROMUX® AC Voltage Detector with Relay detects voltage from 50VAC to 250VAC when connected to an environmental monitoring system with dry contact inputs, battery, sensor, or other device. The internal relay closes when sensing voltage above 60VAC and opens when sensing voltage 55VAC and below. Features: Monitors the presence or absence of AC voltage, 50-250 VAC 2-position screw-terminal connection Supports 2-wire sensor cable up to 1,000 feet (305 meters) Available...
Our Price: $70.00
Availability: Usually Ships in 5-14 Days
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Klein Tools CL390 AC/DC Digital Clamp Meter/Auto-Ranging 400 Amp
Klein Tools
Item# KLT-CL390
The Klein Tools CL390 is an automatically ranging true root mean squared (TRMS) digital clamp meter. It measures AC/DC current and NCVT via the clamp, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, and diodes via test leads, and temperature via a thermocouple probe. It features a high visibility, reverse contrast LCD display that optimizes view ability both in dark or bright ambient lighting. Features: Test lead holder on side of clamp and optional...
Our Price: $99.97
Availability: Ships Factory Direct, Typically in 3-10 Business Days
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Triplett MM700B Benchtop Digital Multimeter with 6000 Count LED Display
Triplett
Item# TRIPL-MM700B
The Triplett MM700B True RMS Benchtop Digital Multimeter is a versatile tool designed for various benchwork applications. This AC-powered TRMS meter offers superior accuracy and quick response, making it perfect for any task. It measures a range of parameters including AC/DC voltage and current, æA current, resistance, temperature, capacitance, frequency, inductance, and duty cycle. Moreover, it conducts diode, continuity, hFE, SCR, and equivalent resistance tests. With a 6000 count...
Our Price: $359.99
Availability: Usually Ships in 5-14 Days
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Triplett RWV10G Real World LAN and Cable Verifier for CAT3/5/5E/6/6A/7/UTP/STP - Up to 10Gb Speed Test
Triplett
Item# TRIPL-RWV10G
The Triplett RWV10G Real World LAN and Cable Verifier is break-through technology that brings cable and network verification and testing to a whole new level of reality. Unlike traditional testers, the RWV10G uses digital circuitry and digital testing techniques to perform its tasks. It works with UTP and all Ethernet devices. These tests include traditional TIA568 cable verification (length, opens, shorts, split pairs, wire map) for UTP (unshielded twisted pair). Plus RWV10G's...
Our Price: $649.99
Availability: Usually Ships in 5-14 Days
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Triplett 9200B 300A True RMS AC Mini Clamp Meter
Triplett
Item# TRIPL-9200B
2 Options Available
The Triplett 9200 is a 3 3/4 (4000 count) mini AC digital clamp-on meter with a large display. It measures 300A True RMS AC Current and features a Data Hold function. Built-in non-contact AC Voltage tester. The ABS plastic housing provides impact and drop resistance in a sleek ergonomic design, and the user-friendly Auto Ranging helps maximize results. With an industry standard CAT III 300V design it provides resistance to damage from transient overvoltages in any demanding settings. The...
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Our Price: $49.99
Availability: Usually Ships in 5-14 Days
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Klein Tools ET920 USB-A and USB-C Digital Meter - 3 to 20V DC
Klein Tools
Item# KLT-ET920
The Klein Tools ET920 is a USB digital meter for Type-A and Type-C ports. It accurately and reliably measures and displays the USB port voltage, current, capacity, energy, and resistance simultaneously. It can function with any USB-A and most USB-C ports, including Qualcomm Quick Charge® ports that have the ability to deliver power. It requires NO batteries as it draws power from the power source to function. Features: 3 to 20V DC; Current: 0.05 to 3A (USB-A); 3 to 20V DC;...
Our Price: $39.97
Availability: Usually Ships in 5-14 Days
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Rolls MU118 Digital Multimeter with Frequency Measurement and Temperature Sensor
Rolls Corporation
Item# MU118
This Rolls MU118 instrument is compact, rugged, battery operated, handheld 3 1/2 digit digital multimeter for measuring DC and AC voltage, DC and AC current, resistance and diode, capacitance, transistor, continuity test, temperature and frequency. The dual-slope A-D converter uses C-MOS technology for auto-zeroing, polarity selection and over-range indication. Full overload protection is provided. It is an ideal instrument for use in the field, laboratory, workshop, hobby and...
Our Price: $52.49
Availability: Usually Ships in 5-14 Days
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Triplett CM650 600A True RMS AC/DC Clamp Meter
Triplett
Item# TRIPL-CM650
2 Options Available
The Triplett Model CM650 True RMS Clampmeter can measure AC and DC current up to 600A without breaking the circuit by clamping around a single conductor. This saves time and the circuit will not be damaged. True RMS provides better accuracy when measuring non-sinusoidal or noisy waveforms. Additional measurements include Resistance, Capacitance, Frequency, Temperature, Diode Test, and Continuity. Measurements can read on the 4000 count backlit LCD. It has an Inrush current function that captures...
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Our Price: $99.99
Availability: Usually Ships in 5-14 Days
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Triplett EMF20 Magnetic Field Detector - Measures Electro-Magnetic Field Of ELF from 30 to 300Hz
Triplett
Item# TRIPL-EMF20
The Triplett EMF20 Magnetic Field Meter measures electro-magnetic field of extremely low frequency (ELF) from 30 to 300Hz produced from electric transmission equipment, power lines, microwave ovens, air conditioners, refrigerators, computer monitors, fans, hairdryers, and many other appliances. Measurements can be displayed in milligauss or µTesla. It features a single axis sensor, ±2.5% accuracy, and a Max Hold function. Includes 9V battery and carrying...
Our Price: $129.99
Availability: Usually Ships in 5-14 Days
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Triplett AFCI/GFCI Receptacle Tester with Built-in Flashlight
Triplett
Item# TRIPL-ET550
Take safety and efficiency to a new level with the Triplett Model ET550 AFCI/GFCI Receptacle Tester. Engineered to verify electrical outlet wiring and to assess the proper operation of GFCI and AFCI devices, it's a critical instrument for electricians, home inspectors, and DIY enthusiasts. Detect faulty wiring in 3-wire receptacles with ease, identifying six possible faults with the help of intuitive light indicators. With just a button push, test AFCIs, GFCIs, and 30mA equipment protection...
Our Price: $99.99
Availability: Usually Ships in 5-14 Days
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Triplett MM750B Benchtop Digital Multimeter with 4.3 Inch TFT LCD Dual Display
Triplett
Item# TRIPL-MM750B
The Triplett MM750B is a highly accurate and quick-responding AC Powered TRMS Meter designed for various benchwork applications. It offers precise measurements and versatility, making it suitable for tasks such as PC board testing and repair, product design and testing, student engineering and electronics labs, calibration labs, automated testing, and more. This benchtop multimeter provides a wide range of measurement capabilities, including AC/DC Voltage and Current, æA Current,...
Our Price: $989.10
Availability: Usually Ships in 5-14 Days
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Fluke 325 40/400A AC/DC 600V AC/DC True-RMS Clamp Meter
Fluke Electronics
Item# FLK-325
The Fluke 325 40/400A AC/DC, 600V AC/DC True-RMS Clamp Meter with Frequency, Temperature, & Capacitance Measurements are designed to perform in the toughest environments and provide noise-free, reliable results users can trust to confidently diagnose problems. True-rms measurements and optimized ergonomics make the Fluke 325 Series Clamp Meters the best general troubleshooting tools for commercial and residential electricians. Much like the other Fluke 320 Series Clamp meters, the Fluke 325 Clamp...
Our Price: $414.99
Availability: Ships Factory Direct, Typically in 3-10 Business Days
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Triplett LVPRO10 TDR/Cable Tester for CAT5E/6/6A/8 Twisted Pair and Coax Cables
Triplett
Item# TRIPL-LVPRO10
The Triplett LVPRO10 is a TDR/Cable Tester used to test and trace both twisted pair (CAT5E/6/6A/8) and coax cables. It is ideal for LAN installers and repair technicians. Features: Test twisted pair continuity, opens/shorts, reversals, and split pairs Detect cable length and line sequence Detect PoE presence and standard (802.3AF, 802.3AT, 802.3BT) Ethernet port test Tone mode allows for tracing cables Built-in RJ11, RJ45, and coax ports 2.8" backlit graphical LCD 70VDC input protection Built-in...
Our Price: $279.99
Availability: Usually Ships in 5-14 Days
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Klein Tools ET600 Insulation Resistance Tester - 125V/250V/500V/1000V Test Voltages
Klein Tools
Item# KLT-ET600
The Klein Tools ET600 is a multi-function Megohmmeter capable of producing 125V, 250V, 500V, and 1000V test voltages for insulation resistance measurements up to 4000MΩ. Also tests AC/DC voltages up to 1000V with automatic ranging True RMS technology. Convenient lock function and built-in stand for hands free operation. Dual-function backlit display monitors process. Installation Troubleshooting and Preventive Maintenance of Electrical Wiring...
Our Price: $179.99
Availability: Usually Ships in 5-14 Days
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Klein Tools MM420 TRMS Auto-Ranging Digital Multimeter - 600V
Klein Tools
Item# KLT-MM420
The Klein Tools MM420 Multimeter is an auto-ranging, true root mean square (TRMS) multimeter that measures AC/DC voltage, AC/DC current, and resistance. It can also measure temperature, capacitance, frequency, duty-cycle, and test diodes and continuity. Klein Tools' Test and Measurement product line was exclusively designed from the ground up by electricians for electricians. Years of field research, combined with extensive input from electricians across America, inspired the development...
Our Price: $59.98
Availability: Usually Ships in 5-14 Days
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Barix Temp Sensor
Barix
Item# BARIX-TEMP
Encapsulated 1-Wire temperature sensor for home automation, industrial and control applications. Specifications: Unique 1-Wire interface requires only one port pin for communication Derives power from data line (“parasite power”) – does not need a local power supply Multi-drop capability simplifies distributed temperature sensing applications Requires no external components User – definable non-volatile temperature alarm settings Alarm search command identifies and addresses devices whose...
Availability: Usually Ships in 5-14 Days
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Klein Tools RT210 GFCI Outlet Tester
Klein Tools
Item# KLT-RT210
Klein Tools' RT210 Receptacle Tester is designed to detect the most common wiring problems in standard and GFCI receptacles. A convenient chart on the tester helps determine wiring condition in outlet, based on LED lights results. Conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed. Features: GFCI Tester detects the most common wiring problems in standard and GFCI receptacles Works on GFCI outlets and confirms operation of the ground fault protective...
Our Price: $16.99
Availability: Usually Ships in 5-14 Days
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Markertek carries a large variety of efficient Digital and Analog handheld Multimeters and AC Testers geared towards engineers and professionals. Now you can confidently measure different parameters with a high degree of accuracy. Our selection of Multimeters and AC Testers give you what you need to get the job done by providing consistent, accurate, fast and reliable measurement.

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Klein Tools ET310 Digital Circuit Breaker Finder

Extech MA-120 200 Amp AC/DC Mini Clamp Meter and Voltage Detector with Flashlight

Triplett MM650 6000 Count True RMS High Performance Waterproof (IP67) Digital Multimeter with Lo Z

Klein Tools ET900 USB-A Digital Meter - 3 to 20V DC

Klein Tools ET910 USB-A Digital Meter and Tester - 3 to 20V DC

Klein Tools RT310 AFCI/GFCI Outlet Tester

Bi-Directional USB-C Power Meter & Tester with OLED Display for Phones / Laptops / Tablets - Up to 240W

Angel Guard 4008-048 Chameleon Clips Color Changing Overheating Alert

NTI ACVDRLY-515 AC Voltage Detector with Relay and NEMA 5-15 Plug

Klein Tools CL390 AC/DC Digital Clamp Meter/Auto-Ranging 400 Amp

Triplett MM700B Benchtop Digital Multimeter with 6000 Count LED Display

Triplett RWV10G Real World LAN and Cable Verifier for CAT3/5/5E/6/6A/7/UTP/STP - Up to 10Gb Speed Test

Triplett 9200B 300A True RMS AC Mini Clamp Meter

Klein Tools ET920 USB-A and USB-C Digital Meter - 3 to 20V DC

Rolls MU118 Digital Multimeter with Frequency Measurement and Temperature Sensor

Triplett CM650 600A True RMS AC/DC Clamp Meter

Triplett EMF20 Magnetic Field Detector - Measures Electro-Magnetic Field Of ELF from 30 to 300Hz

Triplett AFCI/GFCI Receptacle Tester with Built-in Flashlight

Triplett MM750B Benchtop Digital Multimeter with 4.3 Inch TFT LCD Dual Display

Fluke 325 40/400A AC/DC 600V AC/DC True-RMS Clamp Meter

Triplett LVPRO10 TDR/Cable Tester for CAT5E/6/6A/8 Twisted Pair and Coax Cables

Klein Tools ET600 Insulation Resistance Tester - 125V/250V/500V/1000V Test Voltages

Klein Tools MM420 TRMS Auto-Ranging Digital Multimeter - 600V

Barix Temp Sensor

Klein Tools RT210 GFCI Outlet Tester

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Multimeters & AC Testers

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