The top of the line Observer TXT has the ability to communicate with other parts of the split system using Tempstar’s SmartComfort TXT communicating system. This is only available if paired with an indoor air-handling unit with the same capabilities. In other words, you need to match the indoor unit with the outdoor for optimal efficiency and the ability for the system to communicate. Lastly,
Tempstar Air Conditioner Reviews says it allows for more efficiency and fine-tuning of comfort when the various components of the split system communicate with each other.
