1. When using, please start the car engine to increase the power without loss of battery power.
2. This product cannot be used to inflate the tires of large and heavy vehicles, such as trucks, large trucks, buses, etc.
3. This machine is only limited to DC 12V 14A power supply. If you want to use AC power, you must add a transformer.
4. Don't use it abnormally, that is, continuously inflate multiple tires. It is recommended not to inflate more than 2 tires each time. Otherwise, the machine will overheat and burn internal parts.