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Extech Manuals & User Guides

Extech Instruments is a leading manufacturer of handheld test and measurement tools, including multimeters, clamp meters, thermometers, and environmental testers.

Tip: include the full model number printed on your Extech label for the best match.

Extech Support

Official site: https://www.extech.com
General support: https://support.flir.com
Warranty & registration: Warranty info · Register a product
Support phone: +1 781-890-7440 — Monday–Friday, 9:00 AM – 5:00 PM EST
Support email: support@extech.com
Contact form: Contact manufacturer support

Extech manuals

Latest manuals from manuals+ curated for this brand.

EXTECH 407026 Heavy Duty Meter User Guide

March 4, 2023

407026 Heavy Duty Meter User Guide Introduction Congratulations on your purchase of the Extech Heavy Duty Light Meter. This light meter offers selectable lighting types, data record/recall, relative display mode,…

EXTECH LT40 White LED Light Meter User Manual

March 3, 2023

EXTECH LT40 White LED Light Meter Introduction Congratulations on your purchase of the Extech LT40 LED Light Meter that measures light intensity from white LED light sources. The LT40 can…

EXTECH PH90 Waterproof pH-Temperature Meter User Manual

January 29, 2023

Waterproof pH/Temperature Meter Model PH90 USER MANUAL Introduction Thank you for selecting the Extech Model PH90 waterproof pH/Temperature meter. This instrument is equipped with a flat surface pH electrode (model pH95)…

EXTECH ET20 Dual Indicator Voltage Detector User Manual

January 24, 2023

EXTECH ET20 Dual Indicator Voltage Detector Model ET20 Dual Indicator Voltage Detector 2-Way AC/DC Voltage Tester (100-250V) OPERATION To check a circuit for voltage, insert the test leads into the…

EXTECH ET23B Low Voltage Tester User Manual

January 23, 2023

ET23B Low Voltage Tester User Manual OPERATION To check a circuit for voltage, connect the test leads to the electrical contacts or conductor to be tested. If voltage is present,…

Extech TM500 12-Channel Thermocouple Datalogger User Manual

January 17, 2023

Extech TM500 12-Channel Thermocouple Datalogger Introduction Congratulations on your purchase of the Extech TM500 Thermometer, an SD Logger Series meter. This meter displays and stores temperature readings from up to…

EXTECH PH220 Waterproof Palm pH Meter User Manual

January 14, 2023

EXTECH PH220 Waterproof Palm pH Meter Introduction Congratulations on your purchase of the Extech PH220 waterproof pH/mV meter. This microprocessor-based device with tactile push-buttons is battery operated and ideal for…

EXTECH ET26B 4 Way Circuit Tester User Manual

January 13, 2023

EXTECH ET26B 4 Way Circuit Tester OPERATION To check a circuit for voltage, insert the test leads into outlet or carefully touch test leads to the electrical contacts or conductor…

EXTECH 42280A Temperature and Humidity Datalogger User Guide

December 17, 2022

EXTECH 42280A Temperature and Humidity Datalogger Introduction The 42280A is a portable, battery operated instrument that moni-tors, displays, and logs Temperature and Relative Humidity (RH). The 42280A can monitor environmental…

EXTECH MO25 Moisture Meter User Guide

December 8, 2022

MO25 MOISTURE METER USER GUIDE Introduction The MO25 measures moisture (%WME) in wood, brick, concrete, paper, & fabric and traces leakage inside walls, ceilings, and floors. Description Contact pins (replaceable)…

Extech UV505 UV-AB Light Meter User Manual

user manual

Comprehensive user manual for the Extech UV505 UV-AB Light Meter, detailing features, operation, safety precautions, maintenance, and specifications for measuring UV-AB light intensity.

Extech Electromagnetic Field Meter Model 480823 User Manual

User Manual

User manual for the Extech Electromagnetic Field Meter, Model 480823. This document details the meter's specifications, operation, battery replacement, EMF exposure information, warranty, and calibration services. It measures EMF in…

Extech EX650 Series User Guide: 600A True RMS Digital Clamp Meters

User Guide

Comprehensive user guide for the Extech EX650 Series of 600A True RMS digital clamp meters, covering models EX650 and EX655. Learn about operation, features, safety, and specifications for accurate AC/DC…

Extech HD500 Heavy Duty Psychrometer + IR Thermometer User Guide

User Guide

User guide for the Extech HD500 handheld psychrometer and IR thermometer. Learn about its features for measuring temperature, humidity, dew point, and wet bulb, along with safety and operational instructions.

Extech 365515 Water Resistant Stopwatch User Manual and Operation Guide