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.
Single throw type switches, designate an on or off type operation. Double throw switches, can divert the flow of electricity from one set of screw terminals to another. These screw terminals are mounted on the side of the switch. A double pole single throw switch is used for turning electricity either on or off.