THR sensors feature an LCD screen on the sensor unit for viewing temperature at the remote location as well as the base unit.

THIS PRODUCT IS COMPATIBLE WITH THE FOLLOWING Oregon Scientific Main Unit MODELS: BAR338, BAR888NA, EMR812, JMR828, JMR838, AND RMR112. 

The THR138 transmissions can also be recieved by the RFXCOM USB 433.92MHz Receiver for X10 and others for home automation use.

For more information on Oregon Scientific Receiver compatibility, please CHECK THE SENSOR COMPATIBILITY CHART WITH YOUR MAIN UNIT BEFORE PURCHASE.