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.

EXTECH manuals

Latest posts, featured manuals, and retailer-linked manuals for this brand tag.

Extech HD450 Datalogging Light Meter User’s Guide

November 24, 2023

Extech HD450 Datalogging Light Meter Introduction Congratulations on your purchase of the Extech HD450 Digital Light Meter. The HD450 measures illuminance in Lux and Foot candles (Fc). The HD450 is a Datalogger and includes a PC interface and WindowsTM compatible…

Brand: EXTECH

EXTECH STW515 Stopwatch Clock User Manual

November 16, 2023

User Manual Stopwatch/Clock with Backlit Display Model STW515 Introduction Thank you for selecting the Extech STW515 Water Resistant Stopwatch with Split Time, Alarm, and Clock features. Careful use of this stopwatch will provide years of reliable service. This device carries…

Brand: EXTECH

EXTECH 42560-NIST IR Thermometer with Wireless PC Interface Instructions

October 24, 2023

EXTECH 42560-NIST IR Thermometer with Wireless PC Interface Product Information The IR Thermometer with Wireless PC Interface is a versatile temperature measuring device that allows for contact and non-contact temperature measurements. It comes with a wireless USB interface that transmits…

Brand: EXTECH

EXTECH BR200 Video Borescope Wireless Inspection Camera User Manual

October 19, 2023

USER MANUAL Video Borescope Wireless Inspection Camera Models BR200, BR250, and KITS Additional User Manual Translations available at www.extech.com Introduction Thank you for selecting the Extech Video Borescope Model BR200 (17mm camera), BR250 (9mm camera), BR250-4 (4.5mm camera), or BR250-5…

Brand: EXTECH

EXTECH EZ40 EzFlex Combustible Gas Leak Detector User Manual

September 21, 2023

EXTECH EZ40 EzFlex Combustible Gas Leak Detector User Manual Introduction Congratulations on your purchase of the Extech EZ40 Combustible Gas Leak Detector. The EZ40 detects the presence of combustible gas and nuisance vapours (Natural Gas, Methane, Ethane, Propane, Butane, Acetone,…

Brand: EXTECH

EXTECH AN250W Windmeter Bluetooth Connectivity with the ExView Mobile App User Manual

September 20, 2023

EXTECH AN250W Windmeter Bluetooth Connectivity with the ExView Mobile App Product Information The AN250W Anemometer User Manual provides detailed information on the usage and specifications of the product. Safety Please read all safety information before using this device. FCC Compliance…

Brand: EXTECH

EXTECH IR270 Infrared Thermometer User Manual

September 17, 2023

InfraRed Thermometer With Laser Pointer and High/Low Alarms User Manual IR270 Infrared Thermometer Model IR270 Additional User Manual Translations available at www.extech.com Introduction Thank you for selecting the Extech IR270 IR Thermometer. The IR270 makes non‐contact (infrared) surface temperature measurements and includes a laser pointer for convenient argeting. The meter…

Brand: EXTECH

EXTECH EX300 Series Digital Multimeters User Guide

September 15, 2023

EXTECH EX300 Series Digital Multimeters Pick the right Multimeter for your application MN Series Compact and affordable Digital Multimeters with choice of Manual Ranging or Autoranging models. Perfect for DIYers, students, hobbyists, mechanics and technicians. EX300 Series Mini Digital DMMs…

Brand: EXTECH

EXTECH EMF450 Multi Field EMF Meter User Manual

September 6, 2023

EXTECH EMF450 Multi Field EMF Meter Product Information The Multi-Field EMF Meter, Model EMF450, is a device used to measure radiated electromagnetic fields. It can detect voltage, current, electric (E) field, and magnetic (H) field. This includes electromagnetic fields from…

Brand: EXTECH

Extech RHT35 USB Multi Function Datalogger User Manual

September 6, 2023

Extech RHT35 USB Multi Function Datalogger Introduction Thank you for selecting the Extech multi-function, easy-to-use, portable USB datalogger. The RHT35 offers temperature, humidity, and pressure logging. The USB datalogger can be configured and customized by the user by plugging it…

Brand: EXTECH

Extech MO50 Compact Moisture Meter User Manual

User Manual • March 21, 2026

User manual for the Extech MO50 Compact Moisture Meter, detailing its features, operation, specifications, maintenance, and warranty for measuring moisture content in wood and building materials.

Brand: Extech

Extech EN300 5-in-1 Environmental Meter User Manual

User Manual • March 17, 2026

User manual for the Extech EN300, a professional 5-in-1 environmental meter. It measures air velocity, humidity, light, temperature, and sound level, featuring data hold, max/min recording, and a dual display for versatile environmental monitoring.

Brand: Extech

EXTECH 407760 Sound Level Meter USB Datalogger User Manual

User Manual • March 13, 2026

User manual for the EXTECH 407760 Sound Level Meter USB Datalogger. Learn about its features, operation, battery replacement, software setup, warranty, and customer support. Includes detailed instructions and specifications.

Brand: EXTECH

Extech SDL600 Sound Level Meter User Manual

User Manual • February 20, 2026

User manual for the Extech SDL600 Sound Level Meter with SD Card real-time Datalogger. Covers introduction, safety, meter description, getting started, operation, setup, datalogging, PC interface, calibration, battery replacement, disposal, and specifications.

Brand: Extech

EXTECH MG320 Insulation Tester + DMM User Manual

User Manual • February 12, 2026

User manual for the EXTECH MG320 True RMS Insulation Resistance CAT IV 600V DMM, covering features, safety, operating instructions, maintenance, and specifications.

Brand: EXTECH

EXTECH EX5xxA Series: Heavy Duty Industrial True RMS Multimeters

Datasheet • February 12, 2026

Explore the EXTECH EX5xxA Series of rugged, IP67-rated industrial multimeters. Featuring True RMS, CAT IV-600V safety, and drop-proof design, these multimeters are built for demanding electrical testing environments. Models include EX505A, EX520A, and EX530A.

Brand: EXTECH

EXTECH ET25 Voltage Tester User Manual and Instructions

Instruction Manual • February 11, 2026

Detailed instructions and specifications for the EXTECH ET25 Voltage Tester, covering usage for various AC outlets and safety warnings. Includes product overview and technical details.

Brand: EXTECH

Extech MO257 Pinless Moisture Meter User Guide

manual • February 9, 2026

User guide for the Extech MO257 Pinless Moisture Meter, detailing its features, operation, specifications, and maintenance for accurate non-invasive moisture measurements in building materials.

Brand: Extech

Extech ET10 GFCI Receptacle Tester User Manual

user manual • January 27, 2026

User manual for the Extech ET10 GFCI Receptacle Tester. Provides instructions for testing standard and GFCI receptacles, explains indicator lights, and details warranty and support information.

Brand: Extech

Extech CO220 CO2 Monitor and Datalogger User Manual

User Manual • January 23, 2026

Comprehensive user manual for the Extech CO220 Carbon Dioxide Monitor and Datalogger. Covers features, operation, specifications, troubleshooting, CO2 guidelines, warranty, and support from FLIR Systems.

Brand: Extech

Extech CT20 Continuity Tester Pro User Manual - Features, Specifications, and Operation

User Manual • January 23, 2026

Comprehensive user manual for the Extech CT20 Continuity Tester Pro. Learn about its features, specifications, safety precautions, local continuity testing, and advanced remote continuity and wire identification capabilities.

Brand: Extech

Extech 42280 Temperature and Humidity Datalogger User Guide

User Guide • January 18, 2026

User guide for the Extech 42280 Temperature and Humidity Datalogger, detailing its features, operation, programming, datalogging capabilities, PC connectivity, calibration, specifications, and troubleshooting.

Brand: Extech

Extech 445702 Relative Humidity/Temperature Indicator with Clock User Manual

445702 • October 4, 2025 • Amazon

Comprehensive instruction manual for the Extech 445702, detailing setup, operation, maintenance, and specifications for its humidity, temperature, and clock functions.

Brand: Extech

Extech EA30 Easy View Wide Range Light Meter User Manual

EA30 • October 2, 2025 • Amazon

Comprehensive instruction manual for the Extech EA30 Easy View Wide Range Light Meter, covering setup, operation, maintenance, and specifications.

Brand: Extech

Extech 407730 Digital Sound Level Meter User Manual

407730 • September 29, 2025 • Amazon

Comprehensive instruction manual for the Extech 407730 Digital Sound Level Meter, covering setup, operation, maintenance, and technical specifications.

Brand: Extech

Extech MM750W Datalogging Cat IV True RMS Multimeter User Manual

MM750W • September 29, 2025 • Amazon

Comprehensive user manual for the Extech MM750W Datalogging True RMS Multimeter, covering setup, operation, maintenance, and specifications for safe and effective use with Bluetooth connectivity.

Brand: Extech

Extech EA33 EasyView Light Meter with Memory User Manual

EA33 • September 29, 2025 • Amazon

Comprehensive user manual for the Extech EA33 EasyView Light Meter, covering setup, operation, maintenance, and specifications for accurate illuminance measurements.

Brand: Extech

Extech UV505 Pocket UV-AB Light Meter Instruction Manual

UV505 • September 26, 2025 • Amazon

Comprehensive instruction manual for the Extech UV505 Pocket UV-AB Light Meter, covering setup, operation, maintenance, and specifications for accurate UV-AB light measurement.

Brand: Extech

Extech EX655-600A True RMS AC/DC Clamp Meter User Manual

EX655 • September 23, 2025 • Amazon

Comprehensive instruction manual for the Extech EX655-600A True RMS AC/DC Clamp Meter, covering setup, operation, features, and specifications for accurate electrical measurements.

Brand: Extech

Extech LCR200 Passive Component LCR Meter User Manual

LCR200 • September 21, 2025 • Amazon

This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of the Extech LCR200 Passive Component LCR Meter. It covers measuring inductance, capacitance, and resistance, along with secondary parameters like Q, D, phase, and ESR, across various test frequencies.

Brand: Extech

Extech IR320 Waterproof Dual Laser Infrared Thermometer User Manual

IR320 • September 17, 2025 • Amazon

This manual provides detailed instructions for the safe and effective operation, setup, and maintenance of the Extech IR320 Waterproof Dual Laser Infrared Thermometer.

Brand: Extech

Extech DO600 Waterproof ExStik II Dissolved Oxygen Meter User Manual

DO600 • September 16, 2025 • Amazon

Comprehensive user manual for the Extech DO600 Waterproof ExStik II Dissolved Oxygen Meter, covering setup, operation, maintenance, troubleshooting, and specifications.

Brand: Extech

Extech RHT20 Humidity and Temperature Datalogger User Manual

RHT20 • September 13, 2025 • Amazon

Comprehensive user manual for the Extech RHT20 Humidity and Temperature Datalogger, covering setup, operation, maintenance, troubleshooting, and specifications.

Brand: Extech

Extech FL700 Fluoride Meter User Manual

FL700 • August 30, 2025 • Amazon

Specifically designed for the quick and accurate measurement of fluoride ions in drinking water and other aqueous samples, the ExStik FL700 incorporates a sensing electrode, measuring electronics, and display in one convenient package, making this unit ideal for field or laboratory testing.…

Brand: Extech