PEN TESTER PH-101Product parameters Power: DC9V Power: less than 4.5W Display: Two 3 characters LED Range: pH0 pH14 Display accuracy: 0.01Ph, 0.1 °C between the P
PEN TESTER ORP-101Power: DC9V Power: less than 4.5W Display: Two 3 characters LED Range:-999mv 999mv Accuracy: 1mv Operating temperature: 5 °C to 50 °C Humid
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