| Key Features | - Range: 0-9990 ppm: (0 – 999 ppm the resolution is 1 ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking ‘x10’ image.), Accuracy: ±2%, Conversion Factor: NaCl (avg. 0.5), Cable Length: 24.5? (including sensor), Fittings: 1/4? standard, also available with 3/8? or 1/2?, Power source: 2 x 1.5V button cell batteries (LR44 or equivalent; included), Battery life: approx. 1000 hours of continuous use, Size: 7.6 x 2 x 4.7 cm (3 x .8 x 1.9 in.), Weight: 79.4 g (2.8 oz.), Installs quickly and easily, Also available without T-fitting (Model Name: SM-1WOF), Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver., Auto-Off function conserves battery power. (Shuts off automatically after 10 minutes of non-use), Efficient and accurate, Displays TDS level of a single water line
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