Automobile Air Conditioning 12V/24V Refrigeration Integrated Air Conditioner. The model of this truck air conditioner is rooftop model, all in one machine, installed on the top of the truck cab. 12v and 24v both available, v. Ery easy to install. The entire air conditioner is integrated, with compressors, condensers, blowers and other accessories inside. Uses of air conditioning. The continuous operation of the air conditioner with the on-board battery DC power supply (12V/24V) when parking and waiting and resting. The temperature, humidity, flow rate and other parameters of the ambient air in the car are adjusted and controlled to fully meet the comfort cooling needs of truck drivers device of. No need to perforate, no damage to the body; 2. Cool down and heat up, relaxing and comfortable; 3. No pipeline connection, fast cooling.