HM DIGITAL DUAL TDS METER

Product Name: Dual Inline TDS Meter
Model: DM-1
Measuring range: 0.00-9990PPM, automatic *10 above 999PPM
Resolution: 1PPM (0-999PPM); 10PPM (1000-9990PPM)
Accuracy: ±2%
Power supply: 2*1.5V (button battery)
Extension cord: about 63CM
Size: 76 x 47 x 20mm
Rear installation: with Velcro / with hanging plate