The NEW Digi-Zone, Model MDP3 Ver. 04, Control Panel will control 2 or 3 Zones on any HVAC System, up to 3 Stages of Heating and 2 Stages of Cooling. The MDP3 Ver. 04 will also control Heat Pumps and Dual Fuel as well as many geothermal heat pumps. The digital display is a menu driven screen that guides the installer through the settings for each type of system as well as accurately sets the timings and sensor temperature settings. The MDP3 Ver. 04 also has innovative staging control based time or leaving air temperature. Other features include ZONE-A-LONE™ system setback and expandable to 103 Zones, the most in the industry. To add zones, use the MDPA2 Ver. 04, which is a 2 zone adder. An MDPA2 Ver. 04 is required for each additional 2 zones. Example for 12 Zones order 1-MDP3 Ver. 04 and 5-MDPA2 Ver. 04 which is capable of 13 zones. A specific 8 conductor modular cord is supplied with each adder to connect from one panel to the next.