very poor quality, weak, after long attempts, short unstable success.
very fast shipping. (about 2 weeks) it comes with a magnet that can levitate for about 1.3 cm. it will oscilate and drop eventually, but it's pretty stable. the coil is getting hot very fast. I will not keep it on more than 10m without cooling. after the magnet drop, it will either stay on(0.75A) or off(0.04 A). in nominal mode draws 0.35A sorry for the retarded units in photos
after the magnet removal, to keep the coil cold, you can turn it off by putting the other Pole (South Pole) near the hall sensor.