EXTECH Manuals & User Guides

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 also measure light from fluorescent, metal halide, high-pressure sodium, and…

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) for reliable test results.  This device is shipped fully tested…

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 outlet receptacle slots or place the test lead tips on…

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, the indicator will light. Clean the surface of the tester…

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 twelve (12) Type K, J, T, R, E, or S…

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 field use. The PH220 simultaneously displays pH and temperature. The…

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 to be tested. If voltage is present, the neon indicator…

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 conditions in a variety of residential and commercial storage and…

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) Power/Hold button LED lamps Pocket clip Battery compartment Operation CAUTION:…

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, or Temperature with wind-chill factor. With careful use, this meter…

User's guide for the Extech DM100 4000 Count Autoranging Pocket Multimeter, covering safety, specifications, operation, features, and maintenance.

Comprehensive user manual for the Extech RH250W Hygro-Thermometer, detailing its features, operation, maintenance, specifications, and warranty. Includes information on Bluetooth connectivity with the ExView mobile app.

User manual providing operating instructions, specifications, and battery replacement details for the Extech 39272 Pocket Fold-up Thermometer.

Comprehensive user manual for the EXTECH PQ3350 Power and Harmonics Analyzer, detailing software installation, operation modes, data logging, plotting, and troubleshooting.

User manual for the EXTECH 44550 Pocket Humidity/Temperature Pen, detailing its features, operation, battery replacement, and specifications.

Comprehensive user manual for the Extech CO210 Carbon Dioxide Monitor and Datalogger, covering operation, setup, calibration, specifications, troubleshooting, and CO2 level guidelines.

User manual for the Extech CO100 Desktop Indoor Air Quality Monitor, detailing its features, operation, specifications, and maintenance for measuring CO2, temperature, and humidity.

User guide for the Extech 445713 Big Digit Indoor/Outdoor Hygro-Thermometer, detailing specifications, operation, maintenance, warranty, and support services.

Comprehensive user guide for the Extech PQ3470, detailing its features, specifications, and operation for 3-phase power and harmonics analysis and data logging.

User manual for the Extech UM200 Micro-Ohmmeter, detailing its features, operation, specifications, and maintenance. Ideal for measuring low resistances in various materials.

User manual for the Extech 445703 Big Digit Hygro-Thermometer, detailing operation, specifications, and battery replacement for accurate temperature and humidity monitoring.

User manual for the EXTECH RHT20 Humidity & Temperature Datalogger, covering meter description, operation, software installation, maintenance, specifications, and warranty information.