150 PSI 12V Car Auto Air Compressor Vehicle Tyre Inflator 3 Liter with Air Tank. Designed for high-pressure air horns that require on-board air system. And it has a capacity of 150 PSI pressure and 3 liter air volume. Air tank is made from metal with brass fitting and aluminium shell cylinder, so it is durable in use and possess a reliable quality. The air tank is made from metal with brass fitting and aluminium shell cylinder, so it is durable in use and possess a reliable quality. The air compressor is. With a built in. Temperature switch, this air compressor. Will automatically shut off when air compressor goes over 80 °C and restart when it gets back down to 70 °C...