📘 EXTECH manuals • Free online PDFs

EXTECH Manuals & User Guides

User manuals, setup guides, troubleshooting help, and repair information for EXTECH products.

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

About EXTECH manuals on Manuals.plus

Extech, Inc, With over 45 years, Extech is renowned as one of the largest manufacturers and suppliers of innovative, quality handheld test, measurement and inspection tools in the world. Their official website is Extech.com.

A directory of user manuals and instructions for EXTECH products can be found below. EXTECH products are patented and trademarked under brands Extech, Inc

Contact Info:

Address: Waltham, Massachusetts, United States
Fax us: 603-324-7804
Email: support@extech.com
Phone Number 781-890-7440

EXTECH manuals

Latest manuals from manuals+ curated for this brand.

EXTECH PH100 ExStik Waterproof pH Meters User Manual

December 11, 2025

EXTECH PH100 ExStik Waterproof pH Meters User Manual Additional User Manual Translations available at www.extech.com Introduction Thank you for selecting the Extech Model PH100 and/or the model PH110 (refillable) meter.…

EXTECH 412355A Current Voltage Calibrator User Manual

December 10, 2025

EXTECH 412355A Current Voltage Calibrator Specifications Model: 412355A Functionality: Current/Voltage Calibrator Power Source: 9V battery or AC adapter Features: LCD, POWER button, UP/DOWN buttons, MODE button, UNIT button, MEM/ZERO button,…

EXTECH 445702 Hygro Thermometer Clock User Manual

August 4, 2025

EXTECH 445702 Hygro Thermometer Clock Specifications Display: Time (12/24 hour clock), Temperature (°C/°F), Relative Humidity (%) Power Supply: 1.5V AAA battery Low Battery Indication: Yes Product Usage Instructions Getting Started…

EXTECH 461995 Laser Photo Tachometer Instruction Manual

July 26, 2025

EXTECH 461995 Laser Photo Tachometer Introduction Congratulations on your purchase of Extech's Laser Photo/Contact Tachometer, Model 461995. This Tachometer provides contact/non-contact RPM and Linear Surface Speed measurements. The laser pointer…

EXTECH RHT510 HygroThermometer User Manual

June 24, 2025

EXTECH RHT510 HygroThermometer Product Usage Instructions Introduction Thank you for selecting the Extech Model RHT510. This hand-held device measures Relative Humidity, Air temperature, Dew point temperature, Wet bulb temperature, and…

EXTECH CG204 Coating Thickness Tester User Manual

November 21, 2024

EXTECH CG204 Coating Thickness Tester Introduction Congratulations on your purchase of the Extech CG204 Coating Thickness Tester. The CG204 is a portable meter designed for non-invasive coating thickness measurements. The…

EXTECH CO250 Portable Indoor Air Quality User Guide

November 21, 2024

CO250 Portable Indoor Air Quality

Extech CB10 Tests Receptacles and GFCI Circuits User Guide

October 9, 2024

Extech CB10 Tests Receptacles and GFCI Circuits Introduction Congratulations on your purchase of the Extech Model CB10 Circuit Breaker Finder and Receptacle Tester. This instrument is shipped fully tested and…

EXTECH HD400 Heavy Duty Light Meters User Guide

October 6, 2024

EXTECH HD400 Heavy Duty Light Meters Product Information Specifications: Fc Range: Varies based on model Lux Range: Varies based on model Accuracy: Model specific Max Resolution: Model specific Datalogging (HD450):…

EXTECH SDL720 Heavy Duty Differential Pressure Manometer User Manual

August 17, 2024

EXTECH SDL720 Heavy Duty Differential Pressure Manometer Specifications Model: SDL720 Type: Heavy Duty Differential Pressure Manometer Display: LCD Display Power Source: Batteries or AC adaptor Connectivity: RS232 output jack Memory:…

Manuel d'utilisation du télémètre laser Extech DT500

User Manual

Manuel complet pour le télémètre laser Extech DT500, couvrant les fonctionnalités, la sécurité, les mesures de distance, superficie, volume, inclinaison, et plus encore.

Extech 412355A Current/Voltage Calibrator User Manual

User Manual

Official user manual for the Extech 412355A Current/Voltage Calibrator. Learn how to measure and source current and voltage, use memory functions, and understand specifications, warranty, and support information.

Extech ExStik Waterproof pH Meters PH100 & PH110 User Manual

User Manual

Comprehensive user manual for the Extech ExStik Waterproof pH Meters, models PH100 and PH110. Provides detailed instructions on operation, calibration, electrode maintenance, battery replacement, safety precautions, specifications, and troubleshooting for…

Extech 445815 Humidity Alert II User Manual: Humidity, Dew Point, and %RH Alarms

guide

User's guide for the Extech 445815 Humidity Alert II, a remote probe hygro-thermometer with dew point measurement and programmable high/low %RH alarms. Includes operation, calibration, specifications, and safety cautions.

Extech MO25 Moisture Meter User Guide - Measure Wood, Brick, Concrete Humidity

User Guide

User guide for the Extech MO25 moisture meter. Learn how to measure moisture content (%WME) in wood, brick, concrete, paper, and fabric, and trace leaks. Includes operation, specifications, and battery…

Extech 382275/382276 Switching DC Power Supply User Manual

User Manual

Comprehensive user manual for the Extech 382275 (120V) and 382276 (230V) Single Output Laboratory Grade Switching DC Power Supply, covering operation, safety, specifications, and remote control features.

EXTECH CO200 Carbon Dioxide Monitor User Manual for Indoor Air Quality Monitoring

User Manual

This user manual provides detailed information on the EXTECH CO200 Carbon Dioxide Monitor, designed for indoor air quality (IAQ) monitoring. It covers features, operation, setup, calibration, specifications, and troubleshooting for…

Extech CO210 CO2 Monitor and Datalogger User Manual

User Manual

User manual for the Extech CO210 Carbon Dioxide Monitor and Datalogger, detailing its features, operation, setup, calibration, specifications, troubleshooting, and CO2 level guidelines.

Manuale d'Istruzioni Mini Termometro a Infrarossi Extech IR267 con Ingresso Tipo K e Puntatore Laser

manual

Guida completa per il Mini Termometro a Infrarossi Extech IR267. Include istruzioni operative, caratteristiche, specifiche tecniche, sicurezza e manutenzione per misurazioni precise di temperatura.

EXTECH 407760 Sound Level Meter USB Datalogger User Manual

manual

User manual for the EXTECH 407760 Sound Level Meter USB Datalogger. This document provides essential information on the device's introduction, operation, and battery replacement procedures.

Extech 45118 Mini Thermo-Anemometer User Manual

user manual

User manual for the Extech 45118 Mini Thermo-Anemometer, detailing operation, specifications, maintenance, and warranty information.

Extech VFL Series Process PID Controllers User Manual (96VFL, 48VFL)

User Manual

User manual for Extech VFL Series Process PID Controllers, models 96VFL and 48VFL. This guide covers installation, wiring, programming, operation, and specifications for precise process control applications.