About This [ COMPATIBILITY ] for with Conventional 1H/1C Single-Stage System Forced-Air (Gas, Oil, Electric), Ventilation, Air Conditioning, Gas Fireplace (24 Volts), 750mV, Hot Water Heating. [ Please check the type of HVAC system your home has prior to selecting this product to insure it is compatible.] [ Incompatible Systems ] Does not work multi-stage HVAC systems (2H/2C, 3H/2C) and heat pumps systems(2H/1C, 2H/2C, 3H/2C, 4H/2C), PTAC units, 3-wire hydronic (hot water) heating systems, dual fuel/hybrid heating systems; Does not work 120-240V line voltage systems, mini-split heat pump air conditioners, RV air conditioners (Mach/Roughneck series) Display Features: Large LCD screen with white backlight; shows temperatures from 41°F to 95°F. Ensures easy readability in bright, dim, or low-light environments. Temperature Control: Adjustable temp range: 44°F to 90°F. Features separate swing settings for heating and cooling to boost comfort and reduce unnecessary system cycling. Power Options: Dual-power design: Operates on 24VAC (hardwired) or 2 AAA batteries (batteries not included). Offers flexible installation for different setups. Installation Specs: Requires 2-5 wire setup. Includes built-in protections: 5-minute compressor delay (prevents short cycling). Also supports temperature calibration adjustment (-4°F to +4°F) for precision. Overview Brand : Heagstat Model Name : Single-Stage Thermostat Product Dimensions : 0.98"D x 4.72"W x 3.86"H Controller Type : Push Button Special Feature : Separate Heating and Cooling Swing (Cycle Rate), Compressor Delay Protection