Programmable electronic thermostat as two extremely precise temperature sensors, one for the ground (probe) and the other for the ambient air. Two modes are automatic (4 events) or manual. Large backlit display for intuitive programming. Up to four temperature adjustments (events) can be programmed per day. Energy monitoring feature provides data over 2 days, 30 days or 365 days. Protection against malfunction ensured by a built-in ground fault circuit interrupter (GFCI). Display modes are °C or °F, 24/12 hour.