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Extech Instruments Manuals & User Guides

Extech Instruments manufactures handheld test and measurement tools, including thermal imagers, multimeters, and environmental meters for professional and industrial use.

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

Extech Instruments Support

Official site: https://www.extech.com
General support: https://www.flir.com/support/
Warranty & registration: Warranty info · Register a product
Support phone: +1 877-239-8324 — Mon-Fri 8:30am - 5:00pm EST
Contact form: Contact manufacturer support

Extech Instruments manuals

Latest manuals from manuals+ curated for this brand.

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 45158 Mini Hygro Thermo Anemometer User Manual

December 7, 2022

EXTECH 45158 Mini Hygro Thermo Anemometer User Manual Introduction Congratulations on your purchase of Extech’s Model 45158 Anemometer. The dual display indicates Air Velocity and Humidity, Dew Point, Ambient Temperature,…