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Klein Tools - For Professionals Since 1857
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Specialty Testers

Klein Tools has a wide range of specialty testers, each designed to meet the needs of specific trade professionals. All testers are engineered to give the most accurate readings possible while standing up to the tough jobsite conditions encountered by tradespeople every day.

Gas Detectors

Gas Detectors - Great for HVAC professionals, Klein Tools’ Gas Detectors provide quick and accurate results. Whether you need to detect and measure concentration levels of CO and temperature, refrigerant gases, methane, propane, and other combustible gases, you can expect performance and durability from Klein.

USB Digital Meters

USB Digital Meters - Klein Tools’ USB testers accurately and reliably measure USB port voltage, current, capacity, energy and resistance simultaneously. As they require no batteries, these tools are easy to keep in a tool bag and quickly pull out anytime a USB port needs to be measured.

Environmental Testers

Environmental Testers - Monitor and troubleshoot your environment with easy-to-use test and measurement products from Klein Tools. Monitor light levels, air pressure, or moisture content with precision and accuracy from the brand you know and trust.

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