Intelligent plug-in switch automatically controls a vacuum or dust collector through the power tool’s on/off switch! Eliminates continual running of vacuum to preserve the vacuum motor life. Ideal for miter saws, table saws, sanders, routers and planers. Easy to install — just plug it in! Can be used with any standard 15 amp/125 volt wet/dry vacuum or dust collector system (max 1.0 HP) or power feed unit.