CD/TDS/Salt PROBE Model : CDPB-03 * Plug in the YK-2001PH to be a professional Conductivity and TDS Meter. * Conductivity : 2/20 mS, 2 ranges * TDS : PPM, 2 ranges * Temperature : 0 to 60.0 oC, 0.1oC/0.1oF. * ATC & variable temp. compensation factor adj.