Aprilaire 8466 Universal Programmable Heat Pump Thermostat

Model 8466 is universal and will control - Standard Systems gas / oil / electric. Single Stage/Heat Pump/Multi-Stage, Millivolt Systems STANDARD FEATURES: Large 4.5 square inch LCD with high contrast for easier reading Controls 3 Stages Heat / 2 Stages Cool Bright, white backlit display is easy to read Easy to use temperature control and override program schedule at anytime Progressive recovery Permanent program retention during power loss Indefinite setpoint Hold Choice of 5/1/1 day programmable, or 5/2 day Displays room temperature, temperature setting and outdoor temperature (with 8052 sensor) simultaneously Removable battery cover for fast, easy replacement Dual fuel operation built in - eliminates need for a dual fuel kit (requires 8052 outdoor temperature sensor) Dual Powered...choice of battery powered or hardwired, for all applications Easy-to-wire terminal block Millivolt compatible Outdoor temperature (requires 8052 outdoor temperature sensor) Permanent memory retention during power outage Water panel, air filter, dehumidifier and HVAC service indicators Simple "set-up" menu to activate optional features Soft-touch keys Circulate fan mode (if the fan has been off for 20 minutes the fan will be activated for a 10 minute cycle. Use this mode for a balance of energy savings and air circulation/cleaning) Compressor lockout protection Quick reference instructions on board Display temperature offset (+/-4º) Fahrenheit & Celsius Configures as manual heat/cool, or with auto changeover 5 year warranty Adjustable differential for 1st, 2nd, 3rd stage SPECIFICATIONS: Terminals: Rc, R, W, Y, G, C, S1, S2, 0/B, L, W2, Y2 Operating voltage 24 VAC (18 - 30 VAC) Current - Maximum: 2.5A (total), 1.0A (single output) Maximum surge current: 5A Power supply Dual power. Can be battery or 24 VAC powered (When both the sources are available, battery will be used as back up power.) Battery power: AA size alkaline battery x 2 Battery life: Approximately 1 year Outdoor temperature sensor Maximum distance: 300 feet Room temperature measurement Display range: 32° to 99°F (0° to 40°C) Outdoor temperature measurement Display range: -20° to 130°F (-30° to 55°C) Temperature setting range Heat: 45° to 90°F (7° to 32°C) Cool: 50° to 99°F (10° to 37°C) Dimensions: 5.25" x 4.50" x 1.00"