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FEATURES • 7-Day programming with automatic heat/cool system changeover. • Pushbutton Backlight • Temporary Program Override • Indefinite Program Hold • Adjustable Temperature Display • Programmable Fan Control • Programmable Vacation Time/Temperature Operation • Keypad Lockout • Thermostat Startup up After Power Loss • Up to 4 Digital-signal sensing locations with up to 3 remote indoor sensors plus thermostat. Also displays outdoor temperature with optional outdoor sensor. Temperature sensing can be averaged or weighted by sensor location. • Compressor Short Cycle Protection • System and Thermostat Diagnostics • Humidifier Maintenance Indicator • Air Filter Change-Out Indicator • UV Bulb Replacement Indicator • Adjustable Humidity Display • Programmable Automatic Humidity Reduction • Humidifier Control and Monitoring SPECIFICATIONS Electrical Rating . . . . . . . . . . . . . . 20 to 30 VAC, 50/60Hz with common Terminal Load . .05 to 1.5 A per terminal, 2.5 A maximum all terminals combined Setpoint Range . . . . . . . . . . . . . . . . . . . . 45 to 99°F (7 to 37°C) Rated Differential . . . . . . . . . Heat 0.5 to 1.5°F Cool 0.5 to 2.2°F Operating Ambient . . . . . . . . . . . . . . . . . 32 to 110°F (0 to 43°C) Operating Humidity . . . . . . . . . . . . . . . . . 90% non-condensing max. Shipping Temperature Range . . . . . . . . . . . . . –4 to 149°F (–20 to 65°C) Dimensions . . . . . . . . . . . . . . . . . . . . . 41/8”H x 67/8”W x 13/8”D