Wax motor switches use 120VAC to melt wax inside that little brown box in the picture. Once melted the plunger, coming out of the right side of the unit, pushes on that mechanism which locks the door to the front load washing machine. Maytag model number MAH4000AWQ washing machine.

Most front loader washers have two large support springs and four shock absorbers to keep them from banging during spin. This one had two of it’s shocks completely broken off! I managed to replace all four after quite a lot of effort in uncomfortable positions, lol.