This is something I have been wanting to do for a long time. Switching hoses between machines. Turning on the extractor and/or opening/closing gates actually take up a lot of time. Tired of doing it I have built an automatic extraction and gate system. I hope you like it. Obviously everything is very well earthed and there is no high voltage outside of the boxes. I will be tidying up the birdsnest too before placing the cover over the enclosure!