Braeburn Model 1220 2 Heat/2 Cool Non-Programmable Thermostat The digital non-programmable thermostat shall be a Braeburn, model number 1220, 3.70″ high x 5.16″ wide x 1.38″ deep, powered independently with either 24 VAC or two “AA” Alkaline batteries (3.0 Volt DC). The thermostat shall be compatible with multi-stage conventional systems with up to two stages of heating and two stages of cooling, heat pump systems with one compressor and up to one auxiliary stage. The thermostat shall have a bright blue backlight display, adjustable temperature limits, and separate sub-base for trouble free installation. Temperature control range shall be between 45 and 90 F (7 and 32 C), accuracy of +/- 1 F (+/- .5 C), humidity range between 5% and 95% relative humidity. The thermostat shall include non-volatile memory to retain user settings and auxiliary heat indicator. Thermostat shall have low battery indication and a front reset button will return user settings to default values when pressed. The thermostat can be mounted to a horizontal junction boxFEATURES: • Large 3 Sq. In. Display with• Bright Blue Backlight• Tamper-Proof Adjustable Temperature Limits• Auxiliary Heat Indicator• Hardwire or Battery Powered• Permanent Memory Retains Settings• Separate O & B Terminals• Compressor Short Cycle Protection• Adjustable Temperature Differential• Low Battery Indication• ESD Guard  • Electronic Circuitry• Front Access Reset Button• F / C Switch• Gas / Electric Fan Switch• Mount to Horizontal Box SPECIFICATIONS: Dimensions: 3.70″ x 5.16″ x 1.38″Electric Rating: 24 Volt AC (18-30 Volt AC)1 amp maximum load per terminal3 amp total maximum load (all terminals)AC Power: 18-30 Volt ACDC Power: 3.0 Volts DC (2 “AA” Alkaline batteries included)Compatibility: Conventional systems with up to two stages of heating and two stages of cooling; Heat pump