HM DIGITAL - QC-1 QUICK CHECK MONITOR HM Digital Sale! from 2030 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Press the "Push-to-Check" button for an instant water quality check! HM DIGITAL QC-1 QUICK CHECK MONITOR 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 (389-A) (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)