Deluxe Programmable - Your Comfort, Optimized

Trane XL900 Series 7-day Communicating Programmable Comfort control features:
ComfortLink II communicating technology connects all of your key components so your system automatically charges, configures and calibrates for optimal performance through the lifetime of your products. When the optional Telephone Access Module (TAM) is added, you can conveniently adjust settings and receive system updates wherever you are.