In one embodiment, an edge termination structure is formed in a semiconductor layer of a first conductivity type. A front door has an internal side provided with a front protrusion and a rear door has an internal side provided with a rear protrusion. The sensor system is configured to determine a temperature of the distribution transformer, and the communications module is configured to transmit a load reduction request along the low voltage line to the electrical device based on the temperature of the distribution transformer. When the engaging surface abutting against the arcuate surface of the base, the operating lever can rotates automatically to a desired position under compression of the coil spring. 11 applications in the MAC and PHY layers so that WLANs can function over TV white space channels. If a value of a register involved in such read or write instructions is within the address range of the compiled code buffers andor heap, then the compiled code buffers andor heap need to be included in the core file; otherwise, they do not.