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Aprilaire 8570 Programmable (7 day) MultiStage (2 Heat/2 Cool) Thermostat

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Model 8570 Thermostat: The "One" Thermostat...

...the "right" thermostat to cover virtually every application. Whether the application is heat/cool or heat pump, single-or multi-stage, residential or light commercial, the Model 8570 is
the one thermostat for almost all applications. The 8570 thermostat provides exceptional value and it is easy to install, program and operate. Boasting a large, easy-to-read, vibrantly backlit display, this thermostat provides more "at-a-glance" information about the HVAC system, its accessories and the indoor and outdoor environment than any other thermostat.
Plus, since it's menu-driven, it is so intuitive that you can easily program it - even without the manual. It's that easy. Take it for a test drive at

. Simplest Programming and Operation Available
. Menu driven approach results in the ultimate simplicity.
. Large Backlit Display
. Convenient viewing at any light level.
. Equipment Monitors
. Tells the user when to change their air filter, service their humidifier, change their UV Germicidal Lamp(s) or service their HVAC equipment.
. Displays Outdoor Temperature and Indoor Relative Humidity
. By means of connection to optional outdoor sensor or Automatic Humidifier Control the thermostat becomes your personal indoor environment center.
. Holiday Feature
. Allows the thermostats program to be overridden until the date and time you select whether you're away for hours, days or weeks.
. Progressive Recovery (selectable)
. Assures that the heating or cooling equipment starts at the optimum time to reach your chosen set point after an overnight set back.
. Permanent Program Memory
. The program and all application settings are permanently stored even in a power outage. Clock setting is maintained for 45 minutes accounting for routine equipment service.
. Automatic Daylight Savings Time Adjustment (selectable)
Dimensions: 5-3/4" W  X 4-1/4" H X 1-1/8" D


Thermostat Voltage 24-volts ±20% AC or DC
Max. Total Load Current 2A
Max. Load Current thru Single Output 1A
Solid State Output Residual Current Less than 5 mA
Voltage Drop at Solid State Outputs Less than 1-volt
Operating Range 32°F - 99°F (0 C - 37 C)
Display Accuracy ±1°F between 60°F and 80°F, ±2°F outside this range
Control Accuracy :±1°F
Control Range Heat 40°F - 88°F (4 C - 30 C)
Control Range Cool 42°F - 90°F (6 C - 32 C)
Heat/Cool Deadband 2°F or C
1st Stage Differential Adjustable 1°F - 3°F (1°F default)
2nd Stage Differential Adjustable 1°F - 3°F (1°F default)