Use on conventional systems with up to 3 stages of heating and/or cooling or heat pumps with up to 2 compressors and 1 or 2 stages of auxiliary heat. – Conventional systems: 3H/3C – Heat pumps: 4H/2C – On-board temperature & humidity sensors – Capacitive touch screen – 4 configurable inputs – 3 configurable relay outputs – Humidity control – Economizer enable – Air quality management – UL/cUL listed.