Review on Fucare Portable Bike Pump: Rechargeable Electric Air Compressor for Bike and Car Tires - 150PSI Mini Tire Inflator with Digital Pressure Gauge, LED Light, and Presta Valve Adapter by James Wiley

I mean just plug in and press. It remembers your previously requested psi for each type (car/bike). Just DO NOT over-inflate right away or you will burn the tip. IT IS HOT HOT when trying to remove after 6-8 tires. I think I was too excited. But hey, all kids tires are now inflated to spec, and a little heat never hurt anyone.