high quality 169E ORP Tester waterproof ORP meter，ORP tester

Features:

• Apply in water sources， aquarium， hydroponics， spas， swimming pools and other water systems.

• Compact and portable pen-type design.

• Easy to use and provides instant display of results.  

Specification:

• Measuring range:0~±1999mV

• Accuracy: ±5mV

• Resolution:1 mV

• Display:4-digital LCD

• Power Supply:4×1.5V(AG13) (as air freight restriction battery are not included in delivery)

• Dimensions:188×35×35(mm3)

• Weight:118g

Package list:

• • 1*PH Tester(without box)
  • 1*screw driver
  • 3*1.5V battery
  • 1x instruction manual