HM Digital SM-1 In-Line Single TDS Monitor, 0-9990 ppm Range, +/- 2% Readout

SM-1: In-line Single TDS Monitor The SM-1 is provides an easy to read single line TDS monitor that provides a digital readout. It is ideal for any water filtration system, including reverse osmosis systems, coolers and much more. FEATURES: Displays TDS level of a single water line Efficient and accurate Auto-Off function conserves battery power. (Shuts off automatically after 10 minutes of non-use) Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Comes equipped with one 1/4 inch T-fitting (also available in 3/8″ or 1/2″). Also available without T-fitting (Model Name: SM-1WOF) Installs quickly and easily PRODUCT DESCRIPTION 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.)