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SD card real time Data Recorder
O2, Humidity, Dew point, Temp.
Model : O2H-9903SD
Your purchase of this O2 + HumidityTemp. meter with SD
CARD DATA RECORDER marks a step forward for you into the
field of precision measurement. Although this METER is a
complex and delicate instrument, its durable structure
developed. Please read the following instructions carefully and
always keep this manual within easy reach.
OPERATION MANUAL