Dust extractor automation, 240 volt, current sensor in the consumer unit? - General Electronics - Arduino Forum
Automatic Vacuum Switch, Highwell Dust Control Autoswitch for More Power Tools, Delay Vacuum On/Off to Prevent Circuit Overload and Tripping, Adjustable Actuation Threshold - Walmart.com
iVAC Switch Box - iVac
Don't make the same mistake I did | Auto vacuum switch vs. remote switch for dust collection - YouTube