●Quickly monitor for precise up and down of your nutrient (TDS) level in solution to maximize your grow and ensure plants get the balanced feed they need; Measures while mixing nutrients in your tank ●Large measurement range; 4 to 60 CF, 0.4 to 6.0 EC, 200 to 3000 ppm (EC x 500), 280 to 4200 ppm (EC x 700); General uses include gardening, hydroponics growing tent and reservoir ●Comes factory calibrated so no calibration required and is fully waterproof; Automatic Temperature Compensation provides consistent reading regardless of any fluctuations in temperature ●Combine with pH tester and other meters for full garden nutrients monitoring in water; Other features: Auto off function, no buttons or switches; KIT INCLUDES: AA batteries, Truncheon case, probe care kit sold separately; Packaging may vary ●Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment, built for growers; 5-Year Limited Warranty with proof of purchase