HM Digital DM1 Dual point TDS Meter

Features:

Displays TDS levels of the feed water and product water with in & out electrode probes.
Highly efficient and accurate due to its advanced microprocessor technology.
Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use.
Dual Range 0-9,990 ppm (From 0 - 999ppm the resolution is 1ppm. From 1,000 to 9,990ppm, the resolution is 10ppm, indicated by a blinking 'x10' image.)
Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.
Comes equipped with John Guest Quick-Connect T-fittings as shown.
Installs quickly and easily.

Specifications:
Range: 0 - 9990ppm
Accuracy: ±2%
Cable Length: 24.5" (including sensor)
Power source: 2 x 1.5V button cell batteries (included)
Battery life: over 1,000 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.)

product comes complete, ready for installation.