In the world of gas detection, reliability and affordability rarely go hand-in-hand—until now. Meet the BH-4S Portable 4-in-1 Gas Detector, a rugged, budget-friendly solution built for large-scale detection of Carbon Monoxide (CO), Oxygen (O₂), Hydrogen Sulfide (H₂S), and Methane/Combustible gases (CH₄/EX).
Designed for Simplicity. Built for Safety.
The BH-4S is a perfect match for users who need reliable gas detection with a user-friendly interface. Whether you’re deploying it in construction zones, industrial facilities, or remote fieldwork, this compact detector makes monitoring gas levels intuitive and stress-free.
Key Features:
- Natural Diffusion Sampling – No pump required, for low-maintenance operation
- 32-bit Built-In MCU – Delivers smart self-adaptation and high reliability
- Colorful CSTN LCD Display – Crisp, real-time readings at a glance
- Triple Alerts – Visual LED, audible alarm, and vibration alerts for critical gas levels
- Durable Housing – Crafted with high-strength plastic and anti-slip rubber for water, dust, and drop resistance (IP65 rated)
- Compact & Portable – Pocket-sized (100mm×60mm×30mm) and lightweight at 400g
- PC Connectivity – Upload up to 500 data records for logging, analysis, and printing
Customizable for Your Needs
What makes the BH-4S stand out is its customizability. From multiple language options to adjustable alarm thresholds (on select models), this unit is engineered to work exactly the way you want it to. The built-in software enables flexible calibration and configuration, while the simple interface makes operation nearly effortless.
Note: Alarm limits for CO, O₂, H₂S, and EX are preset and cannot be adjusted.
Performance You Can Count On
- Accuracy: ≤ 5% Full Scale
- Response Time: < 30 seconds
- Battery: 1800mAh Li-ion (8+ hours runtime on full charge)
- Charging: Full charge in 6–8 hours with included cord and wall adapter
- Sensor Lifespan: Up to 2 years
- Environmental Range: -20℃ to 50℃ (toxic gases)
Gas Detection Ranges
| Gas | Range | Resolution | Low Alarm | High Alarm |
|---|---|---|---|---|
| CO | 0–1000 ppm | 1 ppm | 35 ppm | 200 ppm |
| O₂ | 0–30% vol | 0.1% vol | 19.5% vol | 23.5% vol |
| H₂S | 0–100 ppm | 0.1 ppm | 10 ppm | 20 ppm |
| CH₄ (EX) | 0–100% LEL | 1% LEL | 20% LEL | 50% LEL |
Easy Calibration & Support
To maintain peak performance, your BH-4S unit will need periodic calibration. Eco Sensors offers full calibration services. Simply send your device to us, and our technicians will ensure it’s working to spec.
Economical Safety, Without Compromise
The BH-4S Portable 4-in-1 Gas Detector offers professional-grade features and flexibility that’s hard to match in this price range. Whether you’re managing large teams or need a personal safety device you can rely on, the BH-4S brings advanced detection power into a compact, cost-effective package.
You can find this product here: https://www.gas-sensing.com/bh-4s.html
