... Plug into 12V source to defrost windshield or to provide auxiliary heating, 2,800BTU power output CAR ... PTC CERAMIC HEAT & FAN,hFeatures: 1) 120 / 150 / 200W PTC ceramic heater fan 2) Plug into 12V ... source to defrost windshield or to provide auxiliary heating 3) 2,800BTU power output 4) ... caravan or boat, the heater plugs into the 12V cigarette lighter socket. In the summer warmth, ...