... Waterproof Portable Meters Product Features1. Special waterproof connector which four different electrodes (pH, ORP, Conductivity, DO) can be plugged into, ability of the meter ... (k=1, built-in temperature probe), only one-point calibration, measurement range: 0.5μS/cm~200mS/cm, ... -linear temperature compensation for high purity water.•DJS-0.1/T conductivity electrode (k=0.1, built-in temperature probe, ...