What is the operating temperature range?
Operating Ambient Temperature ranges are: Thermostat - 32°F to 120°F, Portable Comfort Control - 32°F to 120°F, Wireless Outdoor Sensor - -40°F to 140°F, RedLINK 2.0 Internet Gateway - 32°F to 120°F (Table at page 15).
From the official Honeywell Home Thx9421r5021ww manual, page 15
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