This is a replacement control box for current generation Dometic air conditioners. The control board inside the control box is compatible with Dometic's Comfort Control Center 2 thermostats. This control box has wires for a 12V connection, furnace control, load shed, and 120V connection. Compatible with a 6 pin air conditioner plug, 3 pin heat strip plug (optional), outdoor temp sensor, indoor temp sensor, freeze control sensor and 2x RJ-11 plug that goes to your thermostat and an additional A/C.