The new aria controller was designed for ceiling mount air conditioners, roof top air handlers, heat pumps and multi-zone VAV systems. Unit mounted relay controller board with 5 or 7 relays programmable for heating, cooling, humidifying and dehumidifying. There is also a special 2 triac, 1 analog output board designed for use with VAV boxes. Display/keypad and relay board connect with a single twisted pair of wires.

Advanced Features:

• Programmable relays for up to 2 cool, 3 heat,
  humidify and dehumidify
• One relay can be assigned as an alarm output|
• Models with internal temperature and humidity sensors
• External temperature and humidity sensors may be
  connected for return air or remote sensing
• Real time clock with programmable 7 day, 3 period per day set points
• Temporary override model
• Defrost control, heat pump operation with auxiliary heat
• pLAN communications to any pCO controller -
  perfect for multi-unit and multi-zone VAV system