MSA Altair io4 electronic cylinder holder for ALTAIR io™ Dock. 

The io 4 Dock enables effortless calibration and bump testing which helps to improve compliance and safety. When in the io Dock, the Altair io 4 portable gas detector knows when it needs a bump test and immediately runs the appropriate test. When the ALTAIR io 4 is in the Dock, all compliance reporting is sent immediately to your MSA Grid account, helping to minimize the risks associated with manual record keeping or data file management.