Bench-top Conductivity meter-Thermometer measures conductivity, liquid resistivity, total dissolved solids (TDS) and salinity by 2 or 4 electrodes, combined conductivity probes and temperature by Pt100 or Pt1000 probes. Datalogger which stores maximum, minimum, average value, it can store up to 36,000 samples. RS232 C serial output or USB 2.0 for data download to a PC or printer from memory or in real time. Functions: REL, HOLD, auto power off which can be disabled., protection degree IP 66. Battery power supply or mains power supply by SWD10 (optional).