A)Single channel vehicle loop detector Description:

The NBT-ILD™ vehicle loop detector is compatible with most gate operators. 
The ULT-MVP may be used in Center, Safety and Exit loop positions.Fifteen sensitivity settings allow for fine adjustment of the detection level.

Loop detectors in recent years have become a popular tool having innumerable applications in policing, right from surveillance operations to traffic control. 
Automation of gates and doors has become a popular usage of the loop detector.

The loop consists of several loops of wire and consideration should be giving to the loop sensitivity when installing on different surfaces. Setting the correct sensitivity allows the loop to operate with maximum detection (16 levels via a trimpot). When detection occurs, the detector energises 2 relays for the output (each can be configured individually). This energising of the relay can be configured into different modes, by selecting the respective dip switch.