Perspective view of the orange and black Klein Tools ET190 gas leak detector featuring a slim pen-style design with a heavy-duty pocket clip, multi-level LED indicator, and high-precision combustible gas sensor.
Product infographic listing the 10+ combustible gases detected including Methane, Butane, Propane, and Natural Gas, featuring a 1-second response time for professional HVAC safety inspections.
Key features infographic highlighting the multi-level visual and audio alerts, the built-in LED work light for dark environments, and the removable battery compartment for the included 2x AAA batteries.
Product dimensional view showing the 6.4-inch compact design of the gas detector with a circular inset demonstrating the tool being carried in a shirt pocket using the integrated pen clip.
Four-panel application graphic illustrating the gas sniffer's use for kitchen appliances, gas stoves, HVAC boiler systems, residential gas meters, and outdoor propane tank inspections.
Action shot of a technician using the ET190 gas detector to inspect a residential HVAC furnace unit, highlighting the 30-second auto-zeroing feature for fast jobsite setup.
Macro action shot of the gas leak detector pinpointing seepage on a black iron gas pipe fitting, demonstrating the wide 50 to 2,000 ppm detection range for minor and major leaks.
Action detail showing the high-powered integrated LED work light illuminating a dark mechanical furnace cabinet, allowing for precise sensor placement and visual alert monitoring in low-light areas.
Klein Tools Manufacturing promotional video
Perspective view of the orange and black Klein Tools ET190 gas leak detector featuring a slim pen-style design with a heavy-duty pocket clip, multi-level LED indicator, and high-precision combustible gas sensor.
Product infographic listing the 10+ combustible gases detected including Methane, Butane, Propane, and Natural Gas, featuring a 1-second response time for professional HVAC safety inspections.
Key features infographic highlighting the multi-level visual and audio alerts, the built-in LED work light for dark environments, and the removable battery compartment for the included 2x AAA batteries.
Product dimensional view showing the 6.4-inch compact design of the gas detector with a circular inset demonstrating the tool being carried in a shirt pocket using the integrated pen clip.
Four-panel application graphic illustrating the gas sniffer's use for kitchen appliances, gas stoves, HVAC boiler systems, residential gas meters, and outdoor propane tank inspections.
Action shot of a technician using the ET190 gas detector to inspect a residential HVAC furnace unit, highlighting the 30-second auto-zeroing feature for fast jobsite setup.
Macro action shot of the gas leak detector pinpointing seepage on a black iron gas pipe fitting, demonstrating the wide 50 to 2,000 ppm detection range for minor and major leaks.
Action detail showing the high-powered integrated LED work light illuminating a dark mechanical furnace cabinet, allowing for precise sensor placement and visual alert monitoring in low-light areas.
Klein Tools Manufacturing promotional video
KLEIN TOOLS

Klein Tools Gas Leak Detector ET190 Combustible Sniffer (50 to 2000 ppm Methane Propane Butane Range Escalating Audible LED Alert HVAC Utility Tools)

In stock
SKU: ET190
$34.98 USD

Description

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Pinpoint Invisible Combustible Gas Leakage in Seconds with Escalating Multi-Sensory Alert Feedback

The Klein Tools ET190 Combustible Gas Leak Detector is a high-precision handheld sniffer engineered to trace, isolate, and pinpoint explosive fuel gases within raw industrial plumbing and climate infrastructure arrays. This professional diagnostic instrument features an advanced chemical sensing core capturing active concentrations across a broad 50 to 2,000 ppm spectrum for methane, propane, and butane variants. Outfitted with an automatic 30-second zeroing process at startup and escalating dual-alert audible and visual LED sequences, this ultra-portable safety sniffer immediately safeguards complex residential lines, commercial water heaters, and mechanical facility equipment.

Best Used For:

  • Gas Pipeline Inspection: Tracing fuel supply lines, joint connections, and valve couplings to identify microscopic gas seepage during proactive commercial plumbing checkouts.
  • Boiler Plant Diagnostics: Testing residential water heaters and industrial boiler rooms to secure reliable baseline safety certifications for facility managers.
  • Restricted Space Isolation: Accessing tight cabinets, unlit mechanical areas, and drafty service cavities using specialized dual-sensitivity filtering parameters.

Key Performance & Safety Features

  • Dual-Tier Sensitivity Profiling: Toggles easily between high and low response configurations to optimize scanning speeds while ignoring drafty room interference.
  • Escalating Multi-Alert Matrix: Integrates a multi-tier visual LED alignment display with a progressive speaker tone to clarify warning signs inside noisy mechanical plants.
  • Autonomous Baseline Auto-Zero: Runs a built-in 30-second calibration routine at startup to ensure immediate baseline alignment to ambient air.
  • Pen-Style Clip Frame: Pocket-sized housing includes a high-retention structural spring clip to facilitate convenient transport in service shirts or canvas gear vests.
  • Integrated Inspection Light: Features a high-efficiency auxiliary built-in LED tracking lamp to cast direct visual paths across dark structural cavities.

What's Included

  • (1) ET190 Combustible Gas Leak Detector Sniffer
  • (2) AAA Alkaline Battery Power Cells
  • (1) Technical Instruction Manual

Technical Specifications

Brand Manufacturer: Klein Tools
Model Number (SKU): ET190
Product Type Category: Combustible Gas Leak Sniffer
Detection Range Matrix: 50 to 2,000 ppm
Target Gases Detected: Methane, Propane, Butane, and Combustibles
Initial Calibration Setup: 30 Seconds (Auto-Zero Startup Process)
Power Supply Interface: 2 x AAA Alkaline Cells (Included)
Display Interface Profile: Multi-Level Visual LED Scale & Audio Transducer
Thermal Operating Limits: 32° to 122° F (0° to 50° C)
Overall Tool Length: 6.34 in
Overall Chassis Width: 1.14 in
Total Structural Weight: 1.8 oz (Bare Weight)
UPC Code Field: 092644694998

PRO-TIP: Always actuate your detector unit inside a known fresh-air zone completely clear of the test site prior to walking up to a suspected line leak. This enables the 30-second initialization program to establish a clean, precise environment zero-point baseline, ensuring maximizing accuracy as you pass the probe down uninsulated pipe joints.