The Honeywell Home TH6100AF2004/U T6 Hydronic Programmable Thermostat in White is a digital control style thermostat with a 7-day programmable schedule. It operates on low voltage power source, specifically 24V, and has the ability to switch between various system settings such as auto, heat-cool-off, cool-off, and heat-off. This thermostat features a square shape, surface-mounted design, and includes a digital display, automatic changeover, and adjustable thermostat settings. Ideal for HVAC and refrigeration systems, this model offers convenience and energy efficiency for heating and cooling control.