The CO71A monitors, records and alerts you to the presence of dangerous carbon monoxide in ambient air.
The visual display constantly indicates precise quantities while the audible and visual alarms respond to various threshold levels.
the audible alarm will sound if 35 PPM CO (or greater) is detected
The alarm frequency will increase with higher concentrations and when the alarm is sounding, the unit cannot be turned off.
Other features include a MAX button that will display the highest reading detected while the meter was on and a HOLD button that freezes the display with the CO reading at the time the HOLD button was pressed.
The backlit display on the UEi CO71 is useful in dark environments to view readings and will displays BAT when the battery needs to be replaced
The meter does not include an auto shut off so will continue to monitor CO levels until turned off.