A  |  B  |  C  |  D  |  E  |  F  |  G  |  H  |  I  |  J  |  K  |  L  |  M  |  N  |  O  |  P  |  Q  |  R  |  S  |  T  |  U  |  V  |  W  |  X  |  Y  |  Z

Term - L


Local Area Network. A group of computers and associated devices that share a common communications line.


vLight Emitting Diode.

Lens Mount :

vThe area where a lens is mounted. There are two types; C- or CS-Mount.

Lens Speed :

Optical speed, expressed by f-number. Smaller f-number means faster lens.

Linux :

An UNIX-like operating system. Very efficient and fast-performing system.

LL :

Line Lock mode

LNB (Low Noise Block Converter) :

The part of satellite dish that hangs off of the arm and looks like a flashlight. It is what captures the digital signal from the satellite.

Lux :

Lumens per Square Meter; unit of illumination amount.

License Plate Recognition (LPR) :

Software that has the ability to read and store license plates on cars. It has the ability to count cars and when applied with a sensor, it can capture images of speeding cars or red-light violating cars.

Loop Through :

A feature in CCTV that enables transmission of video from one device to another through cables. Only available on devices that feature Video In and Video Out.

Luminance :

This refers to the part of a video signal that carries the monochrome information. i.e. brightness information.

Latching Relay :

A relay that when set (either ON or OFF depending upon the relay configuration), locks into place until reset either manually or by a signal.


The abbreviation for Liquid Crystal Display.


The abbreviation for Light Emitting Diode.

Line Drop :

The drop in voltage along a power line caused by the resistance, reactance, and/or leakage in the line's wires.

Lock Relay Output :

A relay on the controller that changes its state upon command by the controller, locking or unlocking a secure door.

Logging :

Creating and storing a permanent record of events that can be reviewed, printed, and analyzed.

Contact Us

This field is required

A valid email address is required

This Field is required

This Field is required

This field is required