HM Digital Quick Check TDS/Conductivity Monitor QC-1

FEATURES: With the push of a button, the unit displays a green or red light, indicating good water quality or service required, respectively Tests for TDS or conductivity levels Eight programmable set points (by dip switch). Bright LED lights Simple to use Factory Calibrated to 100 ppm NaCl. Re-calibration is unncessary. Comes equipped with Mur-lok® Quick-Connect T-fitting - 1/4 inch standard, (also available in 3/8" or 1/2" ) Excellent Reverse Osmosis (RO) or Deionization (DI) monitor Installs quickly and easily SPECIFICATIONS: TDS/EC Range: 0-5000 ppm (10,000 µS) Max. Set Point: 50 ppm (100 µS) Accuracy: ±3% ATC: No Cable Length: 24.5" (including sensor) Fittings: 1/4" Power source: 4 x 1.5V button cell batteries (included) Battery life: Approx. one year Size: 7.6 x 2 x 4.7 cm (3 x .8 x 1.9 in.) Weight: 39.7 g (1.4 oz.) (not including sensor)