Bosean Electronic Technology Co.,Ltd www.bosean.com
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Uncalibrated for long
time
Please calibrate it in time
Fault indication
of time
Battery voltage is
used up
Please charge it and reset
time
Strong
electromagnetism
disturb
Please reset time
Zero calibration
is unavailable
Too much zero drift
of gas sensor
Please calibrate or
replace the gas sensor
Minus gas level
displayed
Gas sensor drift
Calibrate zero point
Sensor fault
indication
Sensor fault
Please contact the
manufacturer or dealer to
replace the gas senor
8. Accessories and others
220V charger and cable
1
Small screwdriver
1
Soft tube
1
User manual and Certificate of
conformity
1
Natural diffusion plastic board
1
9.Precautions for use
a. Prevent the instrument from falling from a height or subject to
strenuous exercise
b. In a high-concentration gas environment, the detector may cannot
be used normally.