This breathing apparatus is capable of providing breathing air for up to four hours so that the user can operate in atmospheres containing little oxygen and / or pollutants. 

Its application is often for those working in extremely long tunnels whereby rescue teams are required to have long duration breathing apparatus as part of their tunnel rescue equipment. The positive pressure set protects the user against the ingress of pollutants into the closed breathing circuit. 

The carbon dioxide in the exhaled air is bound by the CO2 absorber.  At the same time, the breathing air is enriched with oxygen from the built in oxygen cylinder. 

Before the regenerated air is re-breathed, it streams through a breathing air cooler, thus making this unit ideal for long term use in toxic environments.

• 4 hour duration
• Complete with Bodyguard II – Personal Monitor
• Ready for telemetry
• Anti-vibration strap – for safe transportation
• Ergonomically designed for optimum comfort
• High breathing comfort
• Weight: 14.8kg
• Approved to EN145, EN50020, Eex IIC T4 and Eex ia I