In memoriam Out of production Beha Amprobe CM100 - Carbon monoxide meter 3311826 Discontinued The Amprobe CM100 is a compact size CO meter for measuring and displaying the presence of carbon monoxide. The CM100 displays the CO level on its digital display. You can set the meter’s alarm to alert when a CO level goes beyond a predetermined safety level. The CM100 User manual has a chart of published safety levels for CO. CM100 ships with battery,... Ask for replacement