This is a 24VAC low-voltage and Millivolt System Non-programmable thermostat for room use, It does NOT work with electric baseboard heat (120-240 V) and heat pump systems with backup heat. Specifications: Single Stage 1 Heat, 1 Cool Non-programmable 4.5 sq. inch large LCD display with green backlight Fan switch with ON and AUTO functions Easy access battery compartment Low battery indicator Electric or Gas configurable Separate B & O terminals Separate heating and cooling swing (cycle rate) adjustments Room temperature calibration adjustment 5 minute compressor delay protection (selectable on or off) Display options: Fahrenheit or Celsius temperature display Easy wire coded terminal blocks Terminal Designations RH, RC, G, Y, C, O, B, W Universal sub-base Mounts on wall or junction box Battery or 24VAC power Package include: Heagstat H701G Thermostat (Jumper wire connected) Two screws and anchors Operation Manual Installation Manual Cable Label Heagstat specializes in the design and manufacturing of professional grade products that improve the comfort of a home and simplify the installation. This H701G non-programmable digital thermostat has many convenient features. Some of its features include: backlit display easy to read, simple operation with slide switches selecting heat or cool mode operating the fan. This thermostat is compatible with single-stage heating/cooling systems, heating, cooling. It does NOT work with electric baseboard heat (120-240 V), heat pump systems with backup heat or multi-stage heating/cooling. warranty information accompanying this non-programmable thermostat is a 5-year warranty.