This alarm is for use with Cryogenic Dewars. The alarm is factory assembled of a rugged aluminum base and PVC enclosure. There is a Green blinking “OK” light when gas supply is adequate and a Red blinking “LOW” light when gas supply is low.  In addition, an audible alarm activates when purge gas is low.  The alarm operates on a 9-volt battery, included, which can give up to a year of operation, dependent upon usage.

This alarm is also available with a Regulator / Flowgauge on this site.