Frequently Asked Questions

Why the readings are inaccurate?
The air does not circulate during storage and transportaon,
to achieve the best performance of the device, it needs to
be placed in the outdoor venlaon for at least 6 hours
before the first use. Meanwhile, each sensor has individual
differences, just like everyone is with different alcohol
metabolic abilies, so a small number of sensors may
require longer venlaon. In this situaon, to extend the
venlaon me will be advised.
Please be noted that gases such as alcohol, carbon
monoxide, and hydrogen sulfide may interfere with the
tesng of the sensor. Keep away from alcohol, cigarees
(including carbon monoxide), soot (including acrolein), and
fruits (including ethanol) before tesng. If the detector is
exposed to a high-concentraon air pollutant environment,
which will damage the sensor and make it work improperly.
Under these condions, please place the detector in a
well-venlated place for 6 hours again.
The M2000 Series supports calibraon. Please kindly find
the "Calibraon zero" opon in the menu to calibrate the
sensor.
If the reading is sll not normal, please feel free to contact
customer service for further processing.