The 1620A measures temperatures to ± 0.125 °C and humidity to ± 1.5 % on two channels, and displays it on a 240 x 128 LCD screen. In addition, the unit calculates dew point, heat index, and rates of change for both temperature and humidity. A built in Ethernet RJ45 jack means multiple meters can be monitored from the same screen using LogWare III software, or Ethernet allows you to monitor conditions remotely over the internet.