Specification:
Item Type: PH ORP Controller
Material: ABS
Model: PH-803W
Function: measure ORP value/PH value of water quality
Measuring Range: ORP: -1999~1999mV; PH: 0.00~14.00PH
Accuracy: ORP: ±5mV; PH: 0.05PH
Resolution: ORP: 1mV; PH: 0.01PH
Setting Control Range: ORP: -1999~1999mV; PH: 0.00~19.99PH
Operating Environment Temperature: 0-50℃, humidity Display: 4-digit LCD display

Package List:
1 x ORP/PH Water Quality Detector
1 x ORP Pole Test Pen
1 x PH Pole Test Pen
2 x Suction Cup
1 x Hook
1 x Manual

How to Use:
1. Plug in the power supply and turn it on.
2. Connect the PH and ORP electrodes respectively.
3. Remove the protective cover. (Do not touch the electrode bulb with your hands to avoid contamination. The glass bulb is fragile and avoid damage by knocking.)
4. After cleaning the electrode with distilled water or alcohol, wipe off the water on the plastic shell and shake off the small water droplets on the electrode to avoid influence

Test results.
5. Insert the electrode into the measured solution, so that the measuring electrode is immersed in the measured solution.
6. Gently shake the electrode to make the small bubbles on the electrode leave the electrode, and read the stable display number when the value is stable.
7. After use, unplug the power supply, clean the electrode with clean water, and put on a protective cover.
8. For long-term use, the instrument and electrodes must be fixed.