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TECHNICAL DATA
Power supply AC/DC power adapter
DC 5V 2000 mA
Built-in battery 3.7V lithium battery
Record mode • Manual measurement
• Immediate measurement
Record storage 12700
Response Time Within 1 seconds of any
change in CO2
Carbon dioxide
measurement range 0 - 9999 PPM
Accuracy ± 70 PPM ±3% readings
Resolution 1 PPM
Temperature measuring
range -10° to +70°C (14° to 158°F)
Temperature resolution 0.1°C
Temperature accuracy ±0.3°C
Humidity measuring range 0 to 99.9% RH
Humidity resolution 0.1%
Humidity accuracy ±3%
Work condition 0 - 50° C (0 - 85% RH)
Storage condition -20 - 60° C (0 - 90% RH)
Dimensions 107x107x33 mm
Weight 210 g
STAND OR WALL MOUNT
You can either mount the device on the wall (2) or use the

the screw (5) on the back of the unit and then use this screw
to attach the stand to the back. Tighten the screw hand-tight.
CHARGING
The device has a built-in rechargeable lithium battery.
When the low battery symbol [
°C/°F
REC
MODE
ALM
] is displayed on the
screen, please charge the unit using the AC power adapter.
Connect the micro USB cable to the unit, then to the AC
power adapter and then to the wall socket. Alternatively,
connect the unit to a computer USB port for charging.
CALIBRATION
a. The general environment is at 400ppm
b. Make sure the device is shut down
c. Press
the
°C/°F
REC
MODE
ALM
°C/°F
REC
MODE
ALM
buttons and power button at the same time
d. Release the power button and then release the
°C/°F
REC
MODE
ALM
°C/°F
REC
MODE
ALM
buttons -> it will show 400ppm on screen
10


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