An inductive loop detector is used to detect motor vehicles. When the motor vehicle drives over the detectors wire loop the detectors senses the metal and then a relay is activated.
This relay is connected to the motor controller card to automatically open the gate or door. Elsema sells high and medium sensitivity detectors with 1 or 2 channel relay outputs.
Elsema has a range of Saw-Cut loops and Direct Burial loops. They are pre-formed with recommended loop sizes for commercial or domestic applications and makes installation quick and easy.