Handheld test & measurement instruments — humidity, temperature, water quality, power, and more
8 products across 8 product families

Checking carbon monoxide levels is as easy as pushing just one button with the Extech C010. This meter can measure CO levels up to 1,000 ppm with a resolution of 1 ppm and ±5% or ±10 ppm basic accuracy (whichever is greater). The CO10 sounds an alarm starting at 35 ppm that increases in speed at higher concentrations of CO. Above 200 ppm, the alarm will sound continuously. Additional features include a backlight on the display that can be used in low light areas, max hold, data hold, and auto-power-off. The meter comes complete with a 9-volt battery, protective holster, and case.

The Extech CO100 is a desktop indoor air quality CO2monitor that measures carbon dioxide concentrations (CO₂) from 0 to 9,999 ppm, air temperature from -5°C to 50°C (23°F to 122°F), and humidity from 0.1 to 90% RH. It comes with a user programmable visible and audible CO2 warning alarm. The meter has a maximum/minimum CO2 value recall function. The CO100 is complete with a maintenance free NDIR (non-dispersive infrared) CO2 sensor and a universal AC adaptor.

Check CO levels up to 999ppm with the push of a button using Model CO15. An audible alarm indicator will continuously beep starting at 25ppm (preset warning level - value can be adjusted) and the display will flash until the CO level goes down to normal range. A backlight on the display can be used for low light areas. The meter comes complete with batteries, wrist strap, and pouch.

CO210 is a Desktop Indoor Air Quality CO2 Monitor/Datalogger. Measurement ranges are 0 to 9,999 ppm (CO₂), 14 to 140°F (-10 to 60°C) for Air Temperature and 0.1 to 99.9% for Relative Humidity. It features Minimum/Maximum CO2 value recall, Year/Month/Date/Time display, and an Automatic Baseline Calibration (minimum CO2 level over 7.5 days) or manual calibration in fresh air. Comes with AC adapter and user manual.

The Extech CO220 air quality CO2 monitor measures carbon dioxide, air temperature, and humidity. The CO220 also calculates dew point and wet bulb. Use in conference rooms, schools, greenhouses, factories, hotels, hospitals, and any place where high levels of carbon dioxide are generated. It calculates statistical weighted averages of TWA (8 hour Time Weighted Average) and STEL (15 minute Short Term Exposure Limit). Maintenance free NDIR (non-dispersive infrared) CO2 sensor. It can manually store/recall 99 readings. Complete with AC adaptor.

The Extech CO260 monitors indoor air quality for carbon monoxide (CO) and carbon dioxide (CO₂) levels. In high concentrations these gases can affect the health and well-being of people and pets. Monitor CO₂ levels in schools, office buildings, greenhouses, factories, hotels, hospitals, transportation lines, and anywhere that high levels of carbon dioxide may be generated. The CO260 also measures air temperature/relative humidity and calculates dew point/wet bulb temperatures. It can datalog manually up to 99 readings with internal memory or continously up to 32K readings with included software.

The FG100 is a Combustible Gas Leak Detector. Detects combustible gases Liquefied Natural Gas (LNG) and Liquefied Propane Gas (LPG) from 500 to 6500 PPM. Audible and visual alarms. Convenient compact portable size with pocket clip. Continuous operation up to 4 hours. LED indicators for gas leakage and static absorption. Easy one switch operation. Complete with 2 AAA batteries.

The Extech RD350 refrigerant leak detector features a highly sensitive heated diode sensor. It detects a wide range of refrigerants—including R410A, R32, R134a, and more with a sensitivity of just 3g/year. Its tri-colored LED leak level indicator, variable audible alarm, and flexible 15.5” probe make pinpointing leaks effortless.
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