Sper Scientific 800047 Oxygen Pen - Manual (Page 14)

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SPECIFICATIONS
Circuit
Custom one-chip of
microprocessor LSI circuit
Sampling
Time
Approximately 1 second
Operating
Temperature
0 ~ 50°C;
(For best results: 23 ± 5°C)
Operating
Humidity
< 80% RH
Battery
4 DC 1.5 V (UM4/AAA)
batteries
Power Current Approximately DC 4.0 mA
Weight
6 oz (175 g)
Dimensions
7 x 1 ½ x 1 ½”
(180 x 40 x 40 mm)
LCD
Dimensions
28 x 19 mm