This 4-wire electric hose by CenTec® has a three way high/low voltage on/off switch on the handle, which allows you to turn on your vacuum by itself, or your vacuum and powerhead. Direct connect pins on the wall end of the hose connect directly into your supervalve/electravalve when you plug in your hose, providing power to your powerhead. This hose will not work without an electric valve. The swivel handle helps to protect your hose from twists and kinks, allowing for a smother clean. This hose is compatible with all standard valves and wands.