hot sales high quality 169E Digital Pen Type ORP Redox positive and negative Tester waterproof potential meter

 

 

For this ORP TESTER， it does not includes calibration liquid，the one you get maybe not accurate，In order to ensure the accuracy of this item pls make  calibration when you get the parcel 

 

Technical Specification:
Measuring range:0~±1999mV
Accuracy: ±5mV
Resolution:1 mV
Display:4-digital LCD
Power Supply:4×1.5V(AG13)
Dimensions:188×35×35(mm3)
Weight:118g
NOTE: this item comes without retail box.
          this item without battery
 
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