Description: Install on industrial systems such as car washes, window washing, manufacturing, and food processing. The newly upgraded model features digital calibration, low battery indicator, improved accuracy, longer battery life (2 years), longer auto shut-off time (3 min), diagnostic error messaging, and shielded sensor cables. Features: Highly efficient and accurate due to its advanced microprocessor technology. Displays TDS levels of the Feed Water and Product Water with in & out electrode probes. Auto-Off function conserves battery power. The unit shuts off automatically after 3 minutes. Dual Range - Measures from 0-999 ppm, with a resolution of 1 ppm. From 1000 to 9990 ppm, the resolution is in 10 ppm increments, indicated by a blinking 'x10' image. Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. The DM-2 features digital calibration. Diagnostic error messaging Shielded sensor cables Comes equipped with 1/4 inch Mur-lok® Quick-Connect T-fittings. Installs quickly and easily. PRODUCT DESCRIPTION: Range: 0-9990 ppm Dual Range – Measures from 0-999 ppm, with a resolution of 1 ppm. From 1000 to 9990 ppm, the resolution is in 10 ppm increments, indicated by a blinking ‘x10’ image. Accuracy: ±2% Conversion Factor: NaCl (avg. 0.5) Cable Length: 46″ (including sensor), shielded cables Sensor: Dual, 1/4″ diameter for quick-connect fittings (model SP-3, included) Digital Calibration: Digitally factory calibrated to NaCl 342 ppm. Re-calibration can be done separately for each line. Power source: 2 x AA batteries (included) Battery life: Approx. 2 years Size: 11.6 x 6.8 x1.8 cm (4.6 x 2.6 x .7in.) Weight: 201.3 g (7.1 oz.) Differences from the DM-1: Designed for commercial/industrial applications Stronger, water-resistant casing Digital calibration can be done individually on each line. Improved design, including an extra-large, easy-to-read LCD display Longer, waterproof, shielded cables Variable mounting bracket Package Includes: 1 x DM-2: Base Unit (LCD Display) 2 x 1/4” T-fittings (standard) 2 x AA Batteries (pre-installed) 2 x SP-3 Shielded Sensors (connected)