two-level switch
11Float switch — A float switch is a device used to sense the level of liquid within a tank. The switch may actuate a pump, an indicator, an alarm, or other device.Float switches range from small to large and may be as simple as a mercury switch inside a hinged… …
12Three-level pylon — A three level pylon is a pylon designed to arrange conductor cables on three crossbars in three levels. For two three phase circuits (6 conductor cables), it is usual to use fir tree pylons and barrel pylons. Three level pylons are taller than… …
13Railroad switch — For other uses, see Switch (disambiguation). A right hand railroad switch with point indicator pointing to right …
14Crossbar switch — In electronics, a crossbar switch (also known as cross point switch, crosspoint switch, or matrix switch) is a switch connecting multiple inputs to multiple outputs in a matrix manner. Originally the term was used literally, for a matrix switch… …
151ESS switch — The Number One Electronic Switching System, the first large scale Stored Program Control (SPC) telephone exchange or Electronic Switching System in the Bell System, was introduced in Succasunna, New Jersey, in May 1965[1]. The switching fabric… …
16KVM switch — Symbolic representation of a KVM switch. The computer on the right is currently being controlled by the peripherals …
175ESS switch — The 5ESS Switch is the Class 5 telephone electronic switching system sold by Alcatel Lucent. This digital central office telephone circuit switching system is used by many telecommunications service providers. HistoryThe 5ESS Class 5 Switch first …
18Network switch — A network switch or switching hub is a computer networking device that connects network segments. The term commonly refers to a multi port network bridge that processes and routes data at the data link layer (layer 2) of the OSI model. Switches… …
19Difficulty level — In general usage, difficulty level refers to the relative difficulty of completing a task or objective. In computer and video games, the term specifically delineates the ease or difficulty with which an average user may complete a game or a part… …
20Magnetic level gauge — A magnetic level gauge is used to measure the level of fluids. A magnetic level gauge includes a “floatable” device that can float both in high and low density fluids. Magnetic level gauges may also be designed to accommodate severe environmental …
