The product is quality and arrived very fast but I am not happy with the engineering of the printed circuit. As shown in the photo, the distance of the tracks of the high voltage 230V printed circuit board (filter capacitor and input of the feedack transformer) is small and the insulation is not adequate. Also the connection connector between the 230V part of the circuit and the filter capacitor is not suitable for the high impulse currents filtered by capacitor passing through it. I hope they correct these errors in the future.