Description
Approach with Caution Buyers should carefully review the detailed installation and wiring instructions in the images before making a purchase. It is advisable to proceed with caution if you do not have prior installation experience to prevent issues such as malfunction and incompatibility due to purchasing the wrong item. S725 5-1-1 day Programmable Heat Pump Thermostats for House, up to 2 heating and 1 cooling multi-stage systems. Heat pump programmable thermostat. Separate programs for the weekdays and weekends with 4 program periods per day including wake, leave, return and sleep. with Heat Pump systems (with aux or heat) and Heat Pump (without aux) systems. with most 24V conventional single-stage systems systems (i.e. conventional force air, central gas, oil, or furnaces single-stage systems) up to 2 heat 1 cool. Not with 110-240V heat systems (like baseboard heat, line voltage, convectors, radiant-ceiling heat). ---- Does not work with conventional multistage systems, mini split systems and 12v rv thermostats. Dual powered by 24VAC Power or 2 AAA Batteries. No common wire (c-wire) required on most systems (only required on heat only and cool only systems). Easy-to see and read: display with blue backlight, large clear backlit digital display, very suitable for middle-aged and elderly people. Technical support: Separate heat or cool swing set up (0.2°F to 2°F) and 5 minute compressor delay protection (Selectable ON or OFF). Digital thermostat has a built-in battery change and filter change reminders (Set 50-2000 hours). Room temperature calibration adjustment, Accurate temperature control of +/-1-degree F for consistent comfort. Room temperature display range (41°F to 95°F), Temperature control range (44°F to 90°F). 2-year worry-free and 24h customer servic. ( Tip: before purchasing please check whether the wiring port of the old thermostat )