How to use vehicle loop detector/loop sensor/ car park loop detector? How to install loop detector? There are loop detector user manual for your reference.

Compact Size: the compact and well engineered housing Combines all of the industry requirements regarding features and functionality and allows this detector to be Incorporated into any or existing traffic detection system.

Diagnostic Capabilities: Comprehensive diagnostics Capabilities allow for accurate diagnosis of loop and Installation problems. 

Selectable Presence Time: The output of the presence Relay can be selected to limit a detect output to a fixed time(time>30 minutes)while a vehicle remains on the loop 

Loop Frequency Indication: Interference between adjacent loop/detectors can be determined by an integral indication, and eliminated by changing the frequency setting. 

Two separate output relays: Presence Relay A is presence output. Can be extended for 0,2,5,8,10,15,20 or 30 seconds, programmable with external 10 way DIP switches. Pulse Relay B, programmable with external 10 way DIP switches, provides presence, pulse on entry, pulse on exit, or failed output.