MODEL INDUSTRIAL carries four electrochemical cells chosen at order time (typically O3, NO2, SO2, CO), each with a ~2 year service life.
MODEL INDUSTRIAL carries four electrochemical cells chosen at order time (typically O3, NO2, SO2, CO), each with a ~2 year service life.
The formaldehyde and ozone electrochemical cells in MODEL A3 have a ~2 year
service life. Here is how to tell when they are due and how to replace them.
