The Triplett GSM100 Combustible Gas Detector with Flex Gooseneck is a professional gas leak detection tool designed for HVAC technicians, plumbers, utility contractors, maintenance personnel, industrial safety professionals, and facility managers. Engineered to quickly identify the presence of combustible and hazardous gases, the GSM100 helps technicians safely locate leaks in gas lines, appliances, HVAC systems, industrial equipment, and confined spaces.

Featuring a flexible 16" gooseneck probe with a replaceable heated sensor, the Triplett GSM100 provides fast and accurate leak detection in hard-to-reach areas. The TRI Mode Detection system combines visual LED indicators, audible alerts, and vibration notifications to ensure leaks are quickly identified even in noisy or low-visibility environments. Designed for professional field use, the GSM100 detects a wide range of combustible gases and chemical vapors commonly found in residential, commercial, and industrial applications.

• Detects combustible gases including methane, hydrogen, propane, ethylene, ethane, hexane, benzene, iso-butane, ethanol, ammonia, hydrogen sulfide, and many others
• Detects common gas mixtures such as natural gas, gasoline vapors, industrial solvents, paint thinners, and dry cleaning fluids
• 16" (406mm) flexible adjustable gooseneck probe for hard-to-access leak detection
• Replaceable heated sensor improves long-term serviceability
• TRI Mode Detection provides visual, audible, and vibration alerts
• Five red LEDs display gas concentration threshold levels
• Two sensitivity settings: Low and High
• 85dB audible ticking alert increases frequency as gas concentration rises
• Vibration alert intensity increases with detected gas levels
• Auto zero calibration in fresh air
• Hold function freezes measurement readings
• Auto power-off with disable feature conserves battery life
• Ideal for HVAC service, gas leak detection, industrial maintenance, plumbing, and safety inspections

• Manufacturer: Triplett
• Model: GSM100
• UPC: 614395003258
• Product Type: Combustible Gas Detector
• Probe Length: 16" (406mm) Flexible Gooseneck
• Sensor Type: Replaceable Heated Sensor
• Alert Modes: Visual, Audible, and Vibration
• Audible Alarm: 85dB
• Sensitivity Settings: Low and High
• Functions: Auto Zero Calibration, Hold Function, Auto Power-Off
• Detected Gases: Methane, Propane, Butane, Ammonia, Carbon Monoxide, Hydrogen Sulfide, and other combustible gases
• Battery Type: Rechargeable Lithium Ion Battery
• Country of Origin: China
• ECCN: EAR99
• HTS Code: 9027.10.2000
• Shipping Weight: 1.5 lbs.
• Dimensions: 11.4" L x 5.5" W x 2.4" H
• Package Type: Box
• Includes: Rechargeable Li-Po battery and AC charger
• Warranty: 1 Year