RHT Transmitter - The RHT-WM and RHT-DM transmitter series incorporate the best high accuracy and great stability relative humidity and temperature sensors. They convert the measured values into linear 4 to 20 mA signals and optional 0 to 10 Vdc output can also be offered under request. The microprocessor based circuit enables full configuration of output range when used with the TxConfig PC interface and the Windows® based software. The humidity signal can be configured to either relative humidity or dew point output.