Adapter #65 30A 14-30 plug, black extension cord with Camco EZ-Pull 14-50 outlet length:60ft. See my demo video here:

See my demo video here:  Dryer Buddy Plus AUTO with kWh meter Demo

This unit will plug into a 3-prong 10-30 outlet which is the older Dryer outlet allowing you to take it on the road and plug into a friends dryer outlet

it is not automatic and doesn't perform switching

see my extensions in the Adapter’s section for several models

Adapter #65 30A 14-30 plug, black extension cord with Camco EZ-Pull 14-50 outlet length:60ft. See my demo video here:2 products in 1! A very handy extension cord to have! Works well at friends and family's homes to reach their NEMA 14 30 4 prong Dryer Outlet (found in homes 1996+) giving you a little more length to plug in your NEMA 14 50 plug equipped EVSE. This cable is both an extension and an adapter with a 14 30 plug and a 14 50 outlet. This cable is for 24amp continuous or lower load so you must set your EVSE or Electric Vehicle to no higher than 24amps. Great