Klein Tools Thermometer ET05 Digital Pocket HVAC Air Duct Tester (3 Inch Stainless Steel Probe Backlit LCD Ambient Direct Contact Temperature Testing)

Audit Climate Register Output and Measure Liquid Line Heat Differentials Instantly with Stainless Steel Direct Contact Testing Logic

The Klein Tools ET05 is a digital manual-operating pocket probe test thermometer engineered for executing ambient and direct-contact air duct thermal diagnostics up to 482°F. This field service instrument introduces an integrated reach-extending storage sheath that transitions into a rigid handle extension to cross-examine deep terminal frames. Operating with a 3-inch industrial stainless steel entry tip, the device provides real-time maximum, minimum, and average tracking metrics across a backlit liquid crystal screen to map structural climate conditions inside dark attic mechanical spaces.

Best Used For:

• Air Duct Profiling: Inserting the reach-extended probe deep into supply and return registers to log thermal transfer variables.
• Liquid Line Diagnostics: Pressing the stainless steel tip against fluid lines to analyze active mechanical heat balancing loops.
• Ambient Chamber Sweeps: Unsheathing the compact tool inside attics or crawlspaces to evaluate baseline atmospheric baseline conditions.

Key Performance & Safety Features

• Reach-Extending Sheath: Protective cover attaches securely to the tool base to function as an extension rod for restricted HVAC enclosures.
• FDA GRAS Compliant Core: Hardened 3-inch immersion sensor probe utilizes high-purity stainless metal to maintain industrial grading standards.
• Backlit Data Matrix Screen: High-contrast digital screen populates illuminated value fields to clear workspace viewing obstacles inside dark vaults.
• Advanced Analytical Toggles: Onboard memory architecture captures real-time maximum, minimum, baseline average, and data hold values seamlessly.
• Automated Energy Conservation: Integrated internal timer routine cuts device power after 15 minutes of idle status to defend button battery life.

What's Included

• ET05 Digital Pocket Thermometer
• Protective Sheath with Pocket Clip
• Two LR44 Button Cell Batteries
• Instruction Manual

Technical Specifications

Pro-Tip: When gathering supply trunk data, nest the pocket clip directly into the sheath cap link; this safely secures the assembly as a rigid handling wand to prevent losing your tester inside internal sheet metal panel slots.