Climate Technology Corp. offers its Model 43503 7-day programmable thermostat.

Climate Technology Corp.’s Model 43503 7-day programmable thermostat features auto programming with easy-to-change presets, an Indiglo® night light display, and a latching relay that assures system compatibility with most 24 VAC heat/cool, heat only or cool only systems; gas, electric or oil systems; millivolt systems; two-wire hydronic systems; and single-stage heat pumps.