A system or device mounted on radio masts, towers and other tall structures intended to assist navigators in determining their position or safe course, or to warn them of dangers or obstructions to navigation.
An automatic tracking system used on ships and by vessel traffic services (VTS) for identifying and locating vessels.
A device used to translate print media into computer language so that a document can be viewed and read later on.
A power transformer of which the magnetic circuit and windings are not immersed in an insulating liquid.
A 'control panel' intended for electrical apparatus.
An electrical conductor that has several power distribution points.
A radio beacon in the mobile service the emissions of which are intended to facilitate search and rescue operations (EPIRB).
Machine capable of transmitting written input via telephone lines.
A projector providing a beam of intense illumination.
An electromagnetic storage device, continuously available within a computer system.
Is a communication system.
A current limiter that limits the power (energy) which can be delivered from a safe area into a hazardous area.
A control panel with an array of systematically arranged (piano like) keys by which a machine is operated or by which an instrument can be played on.
A lightning arrestor is a device used on electric power systems and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning.
Short for modulator/demodulator. A communications device that converts one form of a signal to another that is suitable for transmission over communication circuits, typically from digital to analogue and then from analogue to digital.
A switchgear and controlgear that houses motor starters to control electric motors.
A very accurate flow meter used to record oil exports.
A post or buoy placed over a shoal or bank to warn vessels, also a signal mark on land.
Equipment which projects an image on a screen by passing light through a transparent slide or other transparency.
Is an alarm system.
A physical object for detecting the presence of objects at a distance, or ascertaining their position or motion, by transmitting short radio waves and detecting or measuring their return after being reflected.
A radio transmitter, usually non-directional, that emits identifiable signals intended for radio direction-finding.
Is a piece of hardware intended to read and decode information encoded on a carrier.
A process control unit that can be operated in remote.
A router is a computer networking device that forwards data packets toward their destinations through a process known as routing. Routing occurs at layer 3 (Network layer) of the OSI seven-layer model.