Definition. A nucleic acid that contains the genetic instructions used in the development and functioning of all modern living organisms. DNA's genes are expressed, or manifested, through the proteins that its nucleotides produce with the help of RNA.
Intelligent transfer switch. A transfer switch is an electrical switch that switches a load between two sources. Some transfer switches are manual, in that an operator effects the transfer by throwing a switch, while others are automatic and switch when they sense one of the sources has lost or gained power.
Ethernet Switch (rear view). A network switch is a small hardware device that centralizes communications among multiple connected devices within one local area network (LAN). Standalone Ethernet switch devices were commonly used on home networks many years ago before home broadband routers became popular.