This is a solid state touch button, a relatively new product from banner. This video shows how one button cycles itself at random, while the other 5 work reliably. The buttons are all connected in the same fashion, all controlling the same model of mechanical relay, complete with a tvs diode across the coil.
In another video the faulty button has been swapped with the (same model) one beside it, with the same results.
Buttons should be reliable! Who wants a button that cycles itself at random?
