HM Digital QC-1 Quick Check TDS/Conductivity Push-To-Test Monitor with Set Points, +/- 3% Accuracy 23169109902 Power source: 2 x AA

Power source: 2 x AA batteries (included)

Run time can be set from 1 minute to 2 hours

Temperature Range: 0 – 80°C

or otherwise

Range: pH: 0

HM Digital QC-1 Quick Check TDS/Conductivity Push-To-Test Monitor with Set Points, +/- 3% Accuracy 23169109902 Power source: 2 x AAQC 1: Quick Check TDS Conductivity Monitor This basic EC TDS monitor provides an entry level monitor with its Push to Check button giving you an instant water quality check! With the push of a button, the unit displays a green or red light, indicating good water quality or service required, respectively. FEATURES Eight programmable set points (by dip switch). Bright LED lights Simple to use Quick Easy Installation Factory Calibrated to 100 ppm NaCl.