Photo 1 of **UNTESTED** AprilAire 56 Automatic Whole-House Humidifier Control Humidistat with Outdoor Temperature Sensor for AprilAire Whole-House Humidifiers, Low Voltage 24VAC

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Photo 1 of **UNTESTED** AprilAire 56 Automatic Whole-House Humidifier Control Humidistat with Outdoor Temperature Sensor for AprilAire Whole-House Humidifiers, Low Voltage 24VACPhoto 2 of **UNTESTED** AprilAire 56 Automatic Whole-House Humidifier Control Humidistat with Outdoor Temperature Sensor for AprilAire Whole-House Humidifiers, Low Voltage 24VACPhoto 3 of **UNTESTED** AprilAire 56 Automatic Whole-House Humidifier Control Humidistat with Outdoor Temperature Sensor for AprilAire Whole-House Humidifiers, Low Voltage 24VAC