4 Gas Detector – Portable Monitor with USA NIST Calibration | H₂S, CO, O₂, LEL | Industrial & Confined Space Use

4 Gas Monitor with USA NIST Calibration

•  Sensors Included: This 4-gas monitor detects Oxygen (O₂), Carbon Monoxide (CO), Hydrogen Sulfide (H₂S), and Combustible gases (LEL). It comes factory-calibrated and ready to use.
• Accurate Readings: Fast response time (under 30 seconds) with a detection error of ±5% or less. Includes zero and span calibration features.
• Smart Alarms: Built-in sound, flashing light, and vibration alerts when gas levels exceed safe limits. Alarm thresholds can be adjusted.
• Built to Last: Rugged design with ABS housing and anti-slip rubber grip. Water-resistant, dust-proof, and explosion-proof.
• Trusted Quality: Includes 1-year limited warranty, calibration and QA certificates, and tested in the USA.

Perfect For:

This is our most popular 4-gas monitor for personal safety. Ideal for:

• Utility and refinery workers
• Firefighters and maintenance crews
• Professionals working in sewers, tanks, oil rigs, and confined spaces

What’s in the Box:

• 4-Gas Detector
• English Manual
• USB Charging Cable & Wall Charger
• Calibration Cap & Securing Nut
• Belt Clip
• Calibration Certificate
• QA Certificate

Technical Details:

• Sampling: Natural diffusion (no pump)
• Combustible Gas (LEL): 0–100% (1% resolution)
• Oxygen (O₂): 0–30% (0.1% resolution)
• Carbon Monoxide (CO): 0–999 ppm (1 ppm resolution)
• Hydrogen Sulfide (H₂S): 0–100 ppm (1 ppm resolution)
• Calibration: NIST Certified (Los Angeles, USA)
• Recommended Calibration: Every 12 months
• Sensor Type: Electrochemical (O₂, CO, H₂S), Catalytic (LEL)
• Sensor Life: 2–3 years
• Accuracy: ≤ ±5%
• Response Time: < 30 seconds
• Temperature Range: 0°F – 122°F
• Humidity: <95% RH
• Battery: 3.7V Li-Ion, 2000 mAh
• Alarms: LED, buzzer, vibration
• Explosion Rating: ATEX Ex ib IIC T4 Gb
• Weight: 230 g
• Dimensions: 130 × 67 × 30 mm