??? My 30 dollar third-world built brazilian crappy on-off thermostat has manual fan on and off. It can be programmed to turn on automatically when over/under a

??? My 30 dollar third-world built brazilian crappy on-off thermostat has manual fan on and off. It can be programmed to turn on automatically when over/under a given temperature and also to not run for more than a predefined ammount of minutes. As I understand it any temperature control designed for big refrigerators or freezers has this features. Some even allow you to pre-configure fan cycles (i.e. on for x minutes, off for y, repeat) and turn the cycle on or off depending on temperature or compressor state.