The "RH" on a thermostat stands for relative humidity, which measures the amount of moisture in the air. This affects temperature control in a room because higher humidity levels can make a room feel warmer, even if the temperature setting on the thermostat is the same. Conversely, lower humidity levels can make a room feel cooler. Monitoring and adjusting the relative humidity on a thermostat can help maintain a comfortable and consistent temperature in a room.
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