I didn't quite understand what she was commenting on from other reviews but once I got my unit I understood better. The retractable tray slides out too easily. If I just turn the device face down, the bar falls out. I expect a cozy German vibe from other things from Siemens. This block may or may not withstand the current. Maybe it will take a while, but then the tiny contact points will stop corroding. There can't be many points of contact because the cutoff just falls out of the block. Simply not a convincing electronic device. I return it and get one with no output that I used on another mini-split install. It has nice close contact on the clipped bar.