FIRST ALERT
FIRST ALERT 1039727 CO2 Alarm,AA,Alkaline,Electrochemical 2FTN1
Glasmasters makes things that are easy to clean with just a damp cloth and mild soap.
FIRST ALERT CO2 Alarm,9V,Alkaline,Electrochemical 2FTN4
A nice touch is how quiet an Allen Bradley contactor operates under load.