3 in 1 Water Quality Tester Monitor Pen Type pH & EC & TEMP Meter Acidometer AU Car Accessories the projection area is 7

the projection area is 7 to 16 square meters

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and various viewing angles such as horizontal and vertical placement

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3 in 1 Water Quality Tester Monitor Pen Type pH & EC & TEMP Meter Acidometer AU Car Accessories the projection area is 73 in 1 Water Quality Tester Monitor Pen Type pH & EC & TEMP Meter Acidometer AU The water quality monitor is professional and useful tool for testing PH EC TEMP of solution level. Perfect for wide applications, such as beverage, fish hatcheries, food processing, aquarium, photography, laboratory, quality control, school & colleges, swimming pools, water conditions. Features: Test temperature in (switchable unit). Use to measure the pH & EC & TEMP of