A controlled device responsive to relative humidity of the atmosphere is a ___________.

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Multiple Choice

A controlled device responsive to relative humidity of the atmosphere is a ___________.

Explanation:
Measuring and controlling moisture in the indoor air is what a humidistat does. It senses relative humidity and can activate a humidifier or dehumidifier to hold the space at a desired humidity level. A thermostat is focused on temperature control, not humidity. A hygrometer only measures humidity without driving any equipment. A barometer measures atmospheric pressure. Therefore, the device described is a humidistat.

Measuring and controlling moisture in the indoor air is what a humidistat does. It senses relative humidity and can activate a humidifier or dehumidifier to hold the space at a desired humidity level. A thermostat is focused on temperature control, not humidity. A hygrometer only measures humidity without driving any equipment. A barometer measures atmospheric pressure. Therefore, the device described is a humidistat.

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