description

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 oc, oc/of.
* measurement response time: 30 seconds.
* dc 1.5v battery (um-4, aaa) x 4.
* pen type, easy carryout.