Handheld test & measurement instruments — humidity, temperature, water quality, power, and more
67 products across 65 product families

The Extech 380465 is a Kelvin Clip Test Lead Set for Milliohm Meter Models 380460 and 380462. The 380465 is built from compact, durable field service housing with a protective cover.

The 380565 is a set of Test Leads with Kelvin Clips for the Extech 380580 battery powered milliohm meter. Use these test leads and kelvin clips as extras or spare.

The Extech CB10 is an AC Circuit Breaker Finder/Receptacle Tester that locates circuit breakers and tests receptacle wiring. The CB10 allows the user to quickly locate 110 V to 125 V AC circuit breakers and fuses with audible and visual circuit breaker indication. The product also features a variable sensitivity adjustment to pinpoint correct circuit breaker. This product is complete with a year warranty, the receiver and GFCI transmitter and a 9 V battery for the receiver.

Precision source for calibrating process devices and measuring DC process signals from 0 to 24mA or as mV in voltage ranges with a super large LCD that displays readings in mA, as a percent of the 0 to 24mA range or as mV in voltage ranges. Additional features include Touch Keypad and five stored calibration values for fast calibrations. Complete with 9V Battery, calibration cable with spade lug terminals, carrying case, neck strap, and AC Power Adapter.

Exclusive Oyster design can be used in the lab or in the field. Large LCD built into adjustable "flip up" cover displays pH or mV and Temperature simultaneously. Stores/recalls 25 labeled readings. Auto or manual Temperature compensation. 5 point buffer recognition. Includes meter, neck strap, 9V battery, pH probe, sample buffers (4 and 7pH), and carrying case. Optional RTD Temperature probe.

Professional Test Lead Kit

The TL809 is an 8-piece Professional Test Lead Kit. Includes 3-compartment sealable nylon pouch to organize/protect your test leads. Has a CAT III 1000V safety rating.

The Extech TL831 Master Electrical Test Lead Kit is an industrial grade ten piece kit. It includes the TL726 double molded silicone test leads, the TL747 electronic sharp test probe set, and the TL741 heavy duty plunger style hook clip set. This kit also includes the TL742 heavy duty plunger style pincer grip set, the TL740 industrial plunger style test clips, and the TL708 large alligator clip set. It all comes in a convenient pouch case so it can be taken on the go.

The Extech TL841 Test Lead Kit is a test lead set with straight probes that are CAT III-1000 V rated with a capacity of 16 A. The kit comes with an alligator clip set with a CAT III-300 V rating and a capacity of 5 A. Includes the TL743 slim reach test probe set and the spade lugs which have a 4 mm (0.16 in) opening, 30 VAC/60 VDC, and a capacity of 5 A. This kit also includes the test leads, right angle, straight end, and CAT III-1000 V rated with a capacity of 16 A. Comes with the hook tips, pincer tip and couplers and is conveniently stored in a pouch case.
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The Extech 382254 is a replacement set of test leads for the 382252 Earth Ground Resistance Tester Kit. The test leads are color-coded and durable.

The Extech 45116 is a pair of replacement impellers for the 45118 Anemometer.

This 4-in-1 meter measures Humidity, Temperature, Air Velocity and Light. The dual LCD simultaneously displays Temperature and Air Velocity or Relative Humidity. High Temperature air or surface measurements can be made using the built-in Type K input. Comes complete with built-in Humidity sensor, Light sensor and Vane wheel, wrist strap, and 9-Volt battery.

The Extech 48VFL11 Temperature PID Controller offers fuzzy logic enhanced PID and a soft start feature that protects heaters from cold starts. PID plus fuzzy logic tackles even the most demanding applications, eliminating over-shoot, unwanted process fluctuations, and drift. The soft start feature is ideally suited for processes such as those employed in the thermoplastics industry: where careful, exact, and slow heating of product is required. It accepts thermocouple and RTD inputs. Includes single stage ramp and soak program with ramp-to-set point limit that can be combined with the soft start feature for critical process demands. Complete with mounting bracket hardware and screw terminals for easy wiring. Also available with 4-20 mA output (48VFL13).

The Extech 48VFL13 Temperature PID controller offers Fuzzy Logic enhanced PID and a Soft-Start feature that protects heaters from cold-starts. PID plus Fuzzy Logic tackles even the most demanding applications, eliminating over-shoot, unwanted process fluctuations, and drift. The Soft Start feature is ideally suited for processes, such as those employed in the Thermo-Plastics industry, where careful, exact, and slow heating of product is required. This unit accepts thermocouple and RTD inputs, and offers single stage Ramp and Soak program with Ramp-to-Set point Limit that can be combined with the Soft Start feature for critical process demands. The 48VFL13 comes complete with mounting bracket hardware and screw terminals for easy wiring. Also available with relay output (48VFL11).

The Extech 601100 is a PVC-bodied, easy-to-clean, flat surface pH electrode. The product is ideal for solid products with minimal moisture like cheese, soils, or electrophoretic/agar gels. Includes 99 cm cable with BNC connection.

The Extech 60120B is a pH Electrode. This electrode fits virtually any pH meter that accepts a BNC connector. Features a 0°C to 80°C operating temperature, 0 pH to 14 pH range, and a glass pH sensing bulb surrounded by protective teeth.

The Extech 601500 is a Standard pH Electrode and BNC combination. This electrode includes a long 1 m (39 in) cable for hassle free use, BNC connector, and storage solution bottle. Product has a 6 month warranty.

The Extech 6015WC is a Waterproof pH Electrode for use with the PH220-C Waterproof Palm pH Meter. Features an automatic temperature compensation via the built in Pt-100 Ohm sensor, and comes with a 1 m (39 in) cable. Comes with a six month warranty.

The Extech 850185 is an RTD stainless steel Temperature Probe. For use with the Oyster Series pH kits. The platinum RTD temperature sensor (100 Ohm) has a temperature range of 30°C to 220°C (86°F to 482°F).

The Extech 871515 is a Type-K general purpose temperature probe that can accurately measure temperatures from -40°C to 700°C (-40°F to 1292°F). The probe is 100 mm (4 in) long, 3.2 mm (0.126 in) in diameter, and is attached to a 1 m (39 in) cable with Type-K mini connector, so it is compatible with any meter that supports Type-K inputs. The Extech 871515 comes with a 6-month warranty.

The Extech 881602 is a Type-K Surface Probe with a high temperature range of -40°C to 500°C (-40°F to 932°F). It comes with 1.8 m (70.8 in) of coiled cable with a Type-K mini connector. It can be used with any meter that has a Type-K connector.

The Extech 881603 is a Type-K Immersion Probe. It is for use with any meter that has a Type-K connector.

The Extech 881605 is a Type-K general purpose temperature probe. For use with any meter that has a Type-K connector. Has a temperature range of -200°C to 700°C (-328°F to 1292°F).

The Extech 881616 is a Type-K magnetic grill temperature probe. For use with any meter that has a Type-K connector. This grill temperature probe features a temperature range from -40°C to 200°C (-40°F to 392°F).

The Extech 96VFL11 Temperature PID Controller offers fuzzy logic enhanced PID and a soft-start feature that protects heaters from cold-starts. PID plus fuzzy logic tackles even the most demanding applications, eliminating over-shoot, unwanted process fluctuations, and drift. The soft start feature is ideally suited for processes such as those employed in the Thermo-Plastics industry: where careful, exact, and slow heating of the product is required. Accepts thermocouple and RTD inputs. It includes single stage ramp and soak program with ramp-to-set point limit that can be combined with the soft start feature for critical process demands. Complete with mounting bracket hardware and screw terminals for easy wiring. It is also available with 4-20 mA output (96VFL13).

The Extech 96VFL13 Temperature PID Controller offers fuzzy logic enhanced PID and a soft-start feature which protects heaters from cold-starts. PID plus fuzzy logic tackles even the most demanding applications, eliminating over-shoot, unwanted process fluctuations, and drift. The soft start feature is ideally suited for processes such as those employed in the thermoplastics industry: where careful, exact, and slow heating of different products is required. Accepts thermocouple and RTD inputs. It comes with a single stage ramp and soak program with ramp-to-set point limit that can be combined with the soft start feature for critical process demands. Complete with mounting bracket hardware and screw terminals for easy wiring. Also available with 2 relay outputs (96VFL11).

The Extech BT100 is a Battery Capacity Tester. Product can be used to test the condition of batteries quickly and easily. As an AC milliohm-meter, the tester measures DC voltage and AC resistance while the battery is in use, helping to save time on repetitive testing trials or large quantities of batteries.

Extech CL203 are ExTab Chlorine Reagent tablets (10 pk-100 tests) for the CL200 Chlorine Meter. Foil packaging provides a very stable environment with a long shelf life. It comes with no messy powder reagents for hassle free calibration of your Extech meter. No dosing equipment is required.

Extech CL204 are ExTab Chlorine Reagent tablets (100pk-1000 tests) for the CL200 Chlorine Meter. Foil packaging provides a very stable environment with a long shelf life. It comes with no messy powder reagents for hassle free calibration of your Extech meter. No dosing equipment is required.

The Extech CLT600 is a reliable, easy-to-use tool for detecting electrical power cables, telecommunication cables, and wires in building applications. Featuring non-contact voltage technology, worklights, and an ergonomic design, professionals can safely and efficiently locate hidden wires and cables. Combining premium features including coded signals and sound and visual indications, the CLT600 is a complete solution for field troubleshooting, wiring diagnostics, and verification of electrical installations.

Circuit and wiring issues can introduce shock hazards and compromise performance of machinery and equipment. The CT70 is a GFCI and AC circuit analyzer which covers outlet load handling and outlet tester functions. AC load tester functions cover selectable loads of 12, 15, and 20 Amps; loaded and unloaded AC line voltage measurements; voltage drop/line impedance calculations; and peak line voltage. Outlet tester functions include neutral to ground voltage; hot, neutral, and ground impedance; GFCI trip time/trip current; and open or reversed wiring. The CT70 comes complete with AC test cord (standard North American 3-prong plug).

The DL160 is a Dual Input True RMS AC Voltage/Current Data logger. Simultaneously data log 2 channels of up to 256,000 readings of TRMS AC Voltage (600V) or Current (200A) or one AC Voltage and one AC Current input with a user programmable sample rate from 1 second to 24 hours. LCD displays time/date, current reading, and min/max. Readings can be downloaded to your PC via the USB interface. Featuring Normal, Peak, and Capture (user specified trigger level) recording modes. Complete with 2 current clamps, two sets of test leads, 2 sets of alligator clips, software, USB cable, Universal AC Adapter, and 4 x AAA and 2 x CR2032 Batteries.

The Extech DVA30 is the only two-in-one current/voltage detector designed for electrical testing. It detects AC voltage from 12 Volts to 600 V and AC current from 200 mA (0.2 in. distance) to large current flows, up to 1000 Amps, from a distance. Sensitivity adjustments increase or reduce sensor trigger threshold. Audible and visual indicators show the presence of current or voltage. The DVA30 can be used to trace concealed wires in walls and floors, identify hot wires, trace current flow behind walls, in conduits, through concrete, or underground. The sensitivity is high enough to trip on low voltage HVAC or similar signal levels. Complete with four LR44 button batteries and pocket clip.

EA15 is an EasyView Dual Input Temperature Datalogger capable of-200 Degrees to 1999 Degrees Fahrenheit and -200 Degree to 1360 Degree Celsius measurements. Timer function displays elapsed time plus the time when minimum and maximum readings are taken. Records Max/Min readings for later recall. Built-in datalogger stores up to 8800 data sets. Complete with built-in stand, protective holster, two Type K bead wire temperature probes and batteries.

The EMF450 is a convenient 3-in-1 EMF meter which simultaneously measures and displays Magnetic Field, Electric Field and Radio Frequency Strength. Ergonomic pocket-sized design with an easy-to-navigate menu. Large vivid color TFT display shows digital readings, bargraphs, and trending graph. Magnetic Field, Electric Field, and Radio Frequency (RF) Strength merasurements. Store up to 20 RF historical records. Data Hold and Auto Power Off with disable feature. Complete with 3 AAA batteries and USB power supply cable.

The Extech EMF510 measures energy from electromagnetic fields (EMF) and electrical signals and is sensitive to extremely low frequency levels (ELF). The built-in single-axis sensor is ideal for monitoring power lines, electrical appliances, fans and blowers, and electrical circuits in two ranges with milli-Gauss and micro-Tesla units. The EMF510 features a large backlit LCD for viewing in dimly lit areas, an ergonomic compact design with wrist strap, auto power off, and Min/Max function.

The EN300 Measures Humidity, Temperature, Air Velocity, Light and Sound. Rugged 5-in-1 environmental meter with tripod mount and RS-232 PC interface. Large dual LCD simultaneous display of Temperature and Air Velocity or Relative Humidity. Characters on display reverse direction depending on Hygro-Thermo-Anemometer or Light-Sound Mode. Data Hold, Min/Max, Auto power off, Low Battery/Overrange indication. Built-in low friction vane wheel improves accuracy of air velocity in ft/min, MPH, m/s, km/h, and Knots. Built-in precision thin-film capacitance humidity sensor for fast response. Built in thermistor for ambient temperature measurements. Type K input measures temperature to 2372° (1300°C). Utilizes precision photo diode and correction filter for Cosine and color corrected light measurements. Sound Level measurement meets IEC 61672 class 2 using A frequency weighting and fast response time. Complete with Type K thermocouple probe, pouch case, and six 1.5V AAA batteries.

The convenient Extech EN510 is a 10-in-1 environmental meter that can measure air velocity, air flow, air temperature, Type-K temperature, heat index, and humidity. It also offers wet bulb, dew point, windchill, and light level measurements. The EN510 includes a built-in, replaceable low friction ball bearing mini vane wheel, a precision photo diode with cosine and color correction filter, and a capacitive humidity sensor for high accuracy. The Type-K input accepts standard Type K Thermocouple probes to measure surface temperature up to 1300°C (2372°F). The large dual LCD display is backlit for easy use in dimly lit areas, and auto power off (with disable) helps save the battery.

The Extech ET11 is a ground-fault circuit interrupter (GFCI) Receptacle Tester for Type B electrical outlets. It tests GFCI circuits for faulty wiring in 3-wire receptacles in 110-125 V AC, 50/60 Hz circuits. The ET11 verifies correctly wired receptacles and detects several different wiring faults including: Open Ground, Open Neutral, Open Hot, Hot/Ground Reverse, and Hot/Neutral Reverse with lights that indicate the circuit condition. Featuring convenient features like an ergonomic pull bar and a legend on both sides of the device, the ET11 ensures safe and reliable inspection of outlets every time.

The Extech EZ40 EzFlex Combustible Gas Detector has a 16 inch gooseneck for easy access into hard to reach locations. Detector has a high sensitivity and a one hand operation with thumb controlled sensitivity adjustments to eliminate the background gas levels. It has a visible and audible alarm at 10% (LEL) lower explosive limited for methane. This gas detector will help you locate the smallest leaks. Complete with 3 C batteries.

The Extech FL705 is an easy to clean, rugged ExStik Replacement Fluoride Electrode Module. For use with Extech Model FL700 Fluoride Meter. This module measures fluoride and temperature, featuring ATC via a built-in Pt-100-Ohm sensor.

The GRT300 measures earth ground in 4 ranges from 2 to 2000 Ohm. 4-wire, 3-wire, and 2-wire testing. Large dual line LCD. Automatic I (current) and P (potential) spike check. Test Hold function for easy operation. Autoranging, Automatic Zero adjustment, Data Hold and Auto Power off. AC Earth Voltage. Overrange and low battery indication. Complete with test leads with alligator clips, 4 auxiliary earth bars, hard carrying case, and eight 1.5V AA batteries.

The GRT300 measures earth ground in 4 ranges from 2 to 2000 Ohm. 4-wire, 3-wire, and 2-wire testing. Large dual line LCD. Automatic I (current) and P (potential) spike check. Test Hold function for easy operation. Autoranging, Automatic Zero adjustment, Data Hold and Auto Power off. AC Earth Voltage. Overrange and low battery indication. Complete with test leads with alligator clips, 4 auxiliary earth bars, hard carrying case, and eight 1.5V AA batteries.

The MD10 is a non-contact magnet detector with built in flashlight. A Blue LED lights up indicating the presence of a magnetic field including AC, DC and permanent magnets without contact. Applications include, testing audio speakers, Troubleshoot solenoid valves in pneumatic and hydraulic control equipment, testing relays with coils and electrically controlled solenoid valves in vehicles and machinery. Complete with two AAA batteries.

Extech's MS420 20 MHz 2-Channel Digital Oscilloscope offers a range of capabilities for effective troubleshooting of electronics and electronically controlled electrical systems. With 20 MHz bandwidth and conveniences like auto-set which optimizes the position, range, time base, and triggering to assure a stable display of virtually any waveform, the MS420 can be used in field repairs or bench duty. To identify subtle problems, Peak Detect features a fast 50 ns glitch capture. Core functions like XY Mode, FFT function, Trigger Hold off, Waveform Math, Averaging Mode and Persistence Mode all ensure you can confidently troubleshoot problems using a variety of approaches. To start up recurring testing routines, you can store and recall up to 4 waveform screens and setups to save time from job to job. This CAT II-rated oscilloscope extends its functionality with complete DMM functions that are displayed on the large 3. 8" (97mm) color LCD display. The MS420 comes with two 1X/10X oscilloscope probes, test leads, Windows XP/Vista compatible USB software and cable, capacitor measuring module, adjustment screwdriver, AC adaptor/charger, hard carrying case, user manual, and manufacturer's two-year limited warranty.

Exclusive Oyster Design can be used in the lab or in the field. Large LCD built into adjustable “flip-up” cover displays pH or mV and Temperature simultaneously. Splash proof housing and front panel tactile touch pad to slope and calibrate. Rugged design for handheld or benchtop use; neckstrap for “hands-free” operation. Measures pH (0.00 to 14.00pH), mV (-999mV to 999mV) and Temperature (32.0°F to 212.0°F /0.0°C to 100.0°C). Accurate to 0.02pH, 2mV, 0.8°F/0.5°C and resolution of 0.01pH, 1mV and 0.1°. Memory function stores and recalls 25 labeled readings. Min/Max storage and recall, °C/°F switchable. Audible beeper to alert user when function is completed. Automatic or Manual temperature compensation. Probe sold separately.

The Extech PRT200 is a non-contact phase sequence tester with a 75 to 1000 VAC input voltage and 45 to 65 Hz frequency range. This tester features LEDs that indicate whether each phase is live and that phase's orientation; a beeper sounds intermittently when correct phase is detected and continuously if phase is reversed. An adjustable Hi/Lo LED brightness switch makes it easy to take measurements in dimly lit areas or sunlight, while the CAT IV 600 Volt safety rating plus fully-insulated, wide-jaw alligator clips mean it's appropriate for industrial applications. The PRT200 comes complete with a year warranty, three built-in 30 in. test leads with large color-coded alligator clips, 4 AA batteries, and a pouch case.

The RHM15 is a mini hydro-thermometer monitor which measures humidity and temperature and displays it simultaneously. The RHM15 has a built in memory which stores maximum and minimum readings. The RHM15 features a low battery indication and comes with a built in stand, user's manual and LR44 battery. Measures in °F only.

Check the humidity, temperture, and weather conditions easily with the Extech RHT510 Hygro-Thermometer Psychrometer. This meter can display temperature readings (Air and Type-K), relative humidity, wet bulb, and dew point. The included bead wire Type-K probe can be used to measure temperatures up to 250°C (~480°F), but the meter can measure to 1300°C (2372°F) if used with other probes. Recall highest and lowest readings with the Min/Max function. The RHT510 also features a backlit LCD that displays Data Hold and Auto power off with disable option.

The SD200 is a 3-Channel Temperature Datalogger. Records data on an SD card in Excel format. Selectable data sampling rate of 5, 10, 30, 60, 120, 300,600 seconds or Automatic. Complete with six AAA batteries, 2G SD card, universal AC Adaptor, three Type-K bead wire temperature probes and mounting bracket.

Featuring a temperature range of -40 to 158°F (-40 to 70°C) with an accuracy of ±1°C/1.8°F, the Extech TH10 captures and stores up to 32,000 temperature readings. Users can select data sampling rates of 2s, 5s, 10s, 30s, 1min, 5min, 10min, 30min, 1hr, 2hr, 3hr, 6hr, 12hr and 24hr. The TH10 also has user-programmable high/low alarm thresholds and status indication via red/yellow and green LEDs. Comes with a 3.6-volt lithium battery, a protective USB cap, a mounting bracket, Windows compatible software for analysis, and user manual.

The Extech TH30 data logger is designed with a rugged housing and a standard USB connector, where stored readings (up to 48,000 data) are conveniently transferred to a PC in PDF or Excel spreadsheet format when plugged in. Additional features include an 8-location logger bookmark, 6 language options, programmable sampling interval, adjustable alarm, and password-protected security log-in. Large LCD optimizes viewing and the smart LED provides color-coded temperature reading status.

The Extech TL803 General Purpose Test Leads have protective tip covers for safety during storage. Includes standard replacement test leads with shrouded banana connectors and molded strain reliefs. Compatible with most multimeters. The TL803 test leads have a 10 A capacity and are rated at CAT III-1000 V.

The Extech UM200-KTL is a set of 4 wire cables with Kelvin clip connector test leads for the Extech UM200 battery powered milliohm meter. Use them as extras or as a spare if necessary.

The VB300 is a G-Force datalogger which records and times 3-axis shock and vibration (acceleration) readings over its ±18g measurement range. This device will record 3-axis g-force and related peaks to provide a history of shock and vibration conditions. Complete with Magnetized/Bolt-on Mounting Base, 3.6V Lithium battery and Windows compatible analysis software.

The VFM200 measures VOC (Volatile Organic Compound) and Formaldehyde concentrations in real-time. Fast response time, compact, easy-to-carry, and excellent for checking the indoor air quality of homes, offices, factories, hotels, schools and other indoor environments. Potential sources for VOCs include paints, finishes, adhesives, cigarette smoke, pesticides, personal care products, car exhaust, new furnishings, wall coverings, household cleansers, and cooking fuels. Chemicals include: Acetone, Ethylene Glycol, Formaldehyde, Xylene, 1,3-butadiene, Tetrachloroethene, Hydrogen Sulfide, Ammonia, Toluene, Benzene, Methylene Chloride, Perchloroethylene, and MTBE.

The VPC260 is a 6-channel particle counter for monitoring workplace environmental health and quality. Measure up to 6 channels of particle sizes plus air temperature, relative humidity, dew point, and wet bulb. Check indoor air quality for exhaust, smoke, respirable crystalline silica dust (RCS), airborne combustible dust, and other harmful air pollutants.

The VPC260 is a 6-channel particle counter for monitoring workplace environmental health and quality. Measure up to 6 channels of particle sizes plus air temperature, relative humidity, dew point, and wet bulb. Check indoor air quality for exhaust, smoke, respirable crystalline silica dust (RCS), airborne combustible dust, and other harmful air pollutants.

The VPC300 is a Video Particle Counter with built-in Camera. Measures up to 6 channels of particle sizes plus air temperature and relative humidity. Used for capturing videos and photos that are stored onto or a microSD card. The VPC300 can measure up to 6 channels of particle sizes plus air temperature and relative humidity. Use the included software to generate reports with videos, photos and data points. Complete with NIST-traceable calibration certificate, Universal AC Adapter/Charger with multiple plugs, USB cable, PC software, tripod, filter, 7.4V NiMH battery and a hard, protective case.
Carrying Case, Large, Hard Plastic
Universal AC Adaptor 120-240V 9V@1A
Adaptor, RS232 to USB
Replacement Battery for VPC300
Replacement Zero Count Filter for VPC220 & VPC260
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