Systems and methods are described herein for managing the operations of a plurality of microgrid modules. A pair of vertical support brackets, used to connect the freezer door to slide support members of the refrigerator cabinet, are attached to the outer door pan with mechanical fasteners extending through slots formed in the inner door liner and being secured to the corner brackets. The driver circuit operates at speeds up to 1. When the amplifyingdigitizing circuit is operated under an amplifying mode, the control circuit has a first configuration to receive a first input signal and makes the amplifier generate an output voltage at the output end according to the first input signal and an amplification factor. One exemplary microstructure, among others, includes a substrate, an overcoat layer disposed upon the substrate, an air-region within at least a portion of the overcoat layer, and a framing material layer engaging at least a portion of the air-region on the inside of the framing material layer and engaging the overcoat layer on the outside of the framing material layer. It is possible to easily operate the hot starter lever while the operator always keeping a hold on the handle, so that the operability at the time of restarting the engine can be further enhanced.