O2 METER, pen type
Model : PO2-250
* O2 ( Oxygen in air ), Temperature.
* O2 range : 0 to 30.0 % x 0.1 %.
* Temperature. : 0 to 50 °C, °C/°F.
* Measurement response time : 30 seconds.
* Pen type, easy operation and carryout.
* DC 1.5V battery ( UM-4/AAA ) x 4 PCs.
* Pen type easy carryout.