This is the Honeywell Basic PRO 1000 Heat Only Thermostat. This simple and accurate thermostat provides a special garage application mode with setpoint range of 35 to 90F. The Basic PRO non programmable digital thermostat provides electronic control of 24 Vac conventional and heat pump systems or 750 mV heating systems. Easy to read backlit display in various lighting conditions. Precise comfort control (1 F or 0.5 C) maintains consistent comfort to the highest level of accuracy. Displays ambient (measured) temperature at all times. One touch access to setpoint temperature. Powered by batteries (2, AAA included) or 24V hardwire.