Kemo M103N Master/Slave Switch 230V/AC (400V/AC) Turns off other load when the machine is turned on, lamp etc. Monitoring 1-phase or 3-phase machines, Black

Cheap easy way to build a power take off socket for the dust extractor connected to my table saw.

I used this to power a vacuum when using a mitre saw. I ran single sockets for the master and slave so can still use the normal plugs on the tools.

I used this device to automatically switch on my dust collector, when any of my connected woodworking machines are started.

Has Amazon actually read the description of this item? I can't make sense of it at all. Very bad auto translation.