Blood is also called as fluid connective tissue because it posses all the properties of connective tissue. 1  It connects various body parts with each other.  Forms packing around various body organs so called as packing tissue.
This signal monitor switch is used to upgrade any 3000 or 8000 series exit device. It gets mounted in the push-bar of the exit device on the hinge side. It can be used to operate signal lights, horns, monitors or other devices. This switch can be set to be normally open or normally closed.
In electrical engineering, a switch is an electrical component that can make or break an electrical circuit, interrupting the current or diverting it from one conductor to another. The mechanism of a switch removes or restores the conducting path in a circuit when it is operated.