Air Systems CO-91NS Replacement CO Sensors

A portable airline monitor connects easily to a breathing air filtration source or ambient air pumps and monitors the air for CO or CO/O2, depending on the model. An audible alarm (95 dBA) and light will activate when the CO level exceeds 10 ppm (5 ppm Canadian). Used in the closed and upright position, an external alarm and lights signal the user if there are dangerous CO or CO/O2 levels.

• 2 year warranty
• OSHA approved