RIGID DC air conditioner MT- HS23P, its cooling capacity 2,300W (7,843Btu). It contains two parts, one is condenser installed outside vehicles ( rooftop-mounted or somewhere) for heat air ventilation, the other part is air cooler installed inside the cabin to breeze cool air. Runs on DC-powered 24/48/72 volt, R134a Eco-friendly refrigerant.