Description
Yellow/black housing · MSC.581(110)-ready
The Honeywell BW™ Flex4 in this 5-gas configuration is built for safe enclosed-space entry on board ships. In one compact, rugged instrument it monitors the five key atmospheres at once: CO₂, combustible gases (infrared %LEL), O₂, H₂S and CO. The dedicated NDIR CO₂ sensor is what sets it apart, under IMO MSC.581(110), CO₂ must be measured separately and kept below 0.5% (5,000 ppm) before entry, which standard 4-gas detectors can’t do.
Intelligent i-Series sensors predict calibration and end-of-life, the infrared LEL sensor is immune to silicone poisoning, and IP66/68 weatherproofing with single-button operation makes it tough and simple to use. One 4.5-hour charge gives weeks of runtime, and Bluetooth® keeps configuration and records inspection-ready.
Specifications
| Configuration | 5-gas: CO₂ (NDIR) · %LEL (IR) · O₂ · H₂S · CO |
| Housing | High-visibility yellow (also in black) |
| Sensor ranges | CO₂ 0–5% VOL · LEL 0–100% · O₂ 0–25% VOL · H₂S 0–200 ppm · CO 0–1,000 ppm |
| Alarms | Audible (95 dB), vibrating, visual; Low/High/TWA/STEL |
| Battery | Up to 2 months on a 4.5-hour charge |
| Ingress protection | IP66 / IP68 |
| Connectivity | Bluetooth® · Safety Suite · IntelliDoX |
| Warranty | 3 years |



