PH Meter Green Hybred Power PH-209G

GREEN pH METER, hybrid power
Model : PH-209G
* Power supply from generator ( battery is no need )
or DC 9V battery.
* pH : 0 to 14.00 pH, mV : 1,000 mV.
* ATC or Manual temperature compensation.
* Auto calibration, Data hold, Record, RS232/USB