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With Backlight Or NotYes
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
Product Description This handy ORP tester measure the amount of Oxidation Reduction Potential (mV) from -1999~1999mV. It has clear LCD with backlight function for convenient opearation even in dark areas. This device is commonly used in measurement of Water Disinfection, the stronger the ORP, the faster the microbe is killed. Oxidation Reduction Potential (ORP) was found to be a reliable indicator of bacteriological water quality. Features: It has protective cap that helps reduce contamination Clear LCD with backlight function Provides instant display of measured value Compact pensize and light weight for mobility With CE RoHS Marking, passed & comply with all the necessary health and safety required standards set by the European Directives Specifications: Range: -1999~1999mV Resolution: 1mV Accuracy: ±5mV LCD Display : 4 Digits Battery: 4 x 1.5V (AG-13) Operating Temperature: 0~50°C Calibration : manual by mini screwdriver (included) Item Color: Red Dimension: 151 x 33 x 20mm Weight: 53g Note: this product don\'t include the retail box.