HM Digital PSC-54: Single Line, EC/TDS Mini Controller with 4-20mA Output Milwaukee pH600AQ High-Range EC/TDS: 0-6 mS/cm EC

High-Range EC/TDS: 0-6 mS/cm EC and 0-4000 ppm TDS for concentrated nutrient solutions

Citrus Boost (CitraCharge®): The natural citrus formula actively dissolves and removes existing limescale buildup from the water pan

Easy carry handle with strong outer plastic shell

"This is a terrific addition and you'll want a digital refractometer if you spend any time at all with saltwater aquariums

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HM Digital PSC-54: Single Line, EC/TDS Mini Controller with 4-20mA Output Milwaukee pH600AQ High-Range EC/TDS: 0-6 mS/cm ECThe PSC 54 is a NEW product from HM Digital offering extended range EC TDS testing for commercial or industrial water treatment professional. This mini controller has an adjustable relay able to control a pump or valve with a 4 20mA output. FEATURES Extended range for TDS and EC 4 20mA output signal Temperature display mode Digital calibration The fully adjustable relay control is set by the user to automatically stop a pump or valve if the level