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White-Rodgers 1F85-275 Thermostat, MultiStage (2 Heat/2 Cool), Programmable (5+1+1 day) 5+1+1 day programmable or non-programmable 4 time and 4 temperature settings per program (heat & cool) Energy savings up to 33% Patented pre-programmed software simplifies time and temperature programming Display New — 40% larger LCD with improved contrast for easier reading New — Lighted display for easier low-light viewing Comfort & Convenience New — Optional - minimum and maximum temperature configurable Permanent program retention during power loss, no batteries needed Indefinite setpoint Hold or programmable timed Hold up to 8 hours Air filter change indicator Simple menu to activate optional features Temporary temperature override until next program period Soft-touch keypad Maintains room temperature differential within 1 degree Display temperature recalibration (+/- 4°F) Includes 2 “AA” alkaline batteries for long battery life Performance New — Universal – Single Stage, Multi-Stage or Heat Pump New — Coded keypad lockout Selectable Energy Management Recovery Meets ENERGY STAR® specifications Meets California Building Code, Title 24 Fast (FA) or slow (SL) heating cycle anticipation Compressor lockout protection (optional) Electric heat option Dimensions 6.1"W x 3.8"H x 1.1"D Electrical Specifications Rating 20 to 30 VAC, 50/60 Hz or DC 0.05 to 1.5 Amp (load per terminal) 2.5 Amps maximum load (all terminals combined) Standard Systems Multi-Stage—(2- stage heat, 2- stage cool) Heat Pump—(2- stage heat, 2- stage cool) Single Stage gas, oil, electric Thermal Specifications Setpoint Temperature Range: 45° to 90°F (7° to 32°C) Rated Differential: 0.6° to 1.6°F with adjustable anticipation Operating Ambient Temperature: 32° to 105°F (0° to 40°C) Operating Humidity Range: 90% non-condensing maximum