Although it is ON / OFF control, the temperature fluctuation width is astonishingly small. Also it is also attractive to have two sets of one set because of heating of convex mold of the mold and the price is cheap. I am very happy for now.
The price is reasonable and can be controlled up to 15 A and has sufficient performance. Despite being greedy, the diameter of the attached sheath is only a thin type, it is not added, but it is pleasant if it can be selected by specification change, but it is not a minus point.