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.
The OFF-NONE-(ON) or OFF-(ON) circuit is a momentary, single throw, two-position switch circuit. In general, for basic unlighted single pole switches, the momentary ON position closes the circuit at switch terminals 1 & 2. For basic unlighted double pole switches, the circuit is closed at terminals 1 & 2 and 4 & 5.