Pen Tester ORP-101

Power: DC9V Power: less than 4.5W Display: Two 3 characters LED Range:-999mv 999mv Accuracy: 1mv Operating temperature: 5 °C to 50 °C Humidity: less than 90% ORP Monitor Features: 1, ORP value is accurate.ORP pen adopts completely automatic calibration, more accurate than manual calibration in measurements ; 2, with good waterproof probe.ORP probe can be used under water by 10m . 3, long-life platinum electrode.with platinum electrodes,ORP value can be monitored for long-term,and long life-span.