M - SYSTEMS INC.

Magnetic Vehicle detection is a technology that has been in use since the 60's.  It is a very reliable method of sensing the passage of a vehicle.  Vehicles can be as small as a bicycle or as large as a tractor trailer.  The magnetic detector only senses change in the magnetic field caused by a ferrous object.  A person or animal walking over it will not cause a detection.  The sensor is installed under the lane of traffic to be sensed and is wired back to the Magnetic Amplifier module that can be rack or shelf mounted in a traffic control cabinet.  The sensor probe can be buried under the roadway, trenched into the road way or tunneled under the roadway from the side.  It can also be bolted to the underside of bridge structures.  

For detailed specs please download either

Rack Mount Model 231/232 http://www.msiled.com/232fly.pdf

Shelf Mount Model 231/201 http://www.msiled.com/201fly.pdf