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The Honeywell T921A1191 is a proportional thermostat designed for low voltage, three-wire control of valve motors, damper motors, and balancing relays in both heating and cooling systems. This thermostat operates within a temperature range of fifty-six degrees Fahrenheit to eighty-four degrees Fahrenheit.
This thermostat is suitable for HVAC professionals looking for reliable control over their systems. It offers flexibility in installation and security against unauthorized adjustments.
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