EMX Carsense 303 Detector Only ***Discontinued - Replaced by the LRS - Loop Replacement System***

EMX Carsense 303 Detector Only  ***Discontinued - Replaced by the LRS - Loop Replacement System***

EMX Carsense 303 Detector Only ***Discontinued - Replaced by the LRS - Loop Replacement System***

Regular price $108.00
  • Free shipping on most items over $200
  • We have 15+ years of industry experience
  • GSA, Net 30 and purchase orders available
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 ***Replaced by the LRS - Loop Replacement System, LRS is not compatible with older Carsense 303 Probes, must replace both components***

Detector Only

The CarSense 303 vehicle detector features advanced 3-axis, magnetoresistive sensing technology that responds to changes in the Earth's magnetic field caused by ferrous objects. Three sensing elements provide measurements in the X, Y and Z axes to improve detection sensitivity when used in either above or below ground installations.

The CS303 is equipped with our new DETECT-ON-STOP™ or (DOS®) feature, which allows detection only when a vehicle has come to a complete stop. This exclusive feature is unique to EMX and is a major advantage if you want to ignore cross traffic in tight spaces.

The detector's compact, loop-less design reduces installation costs when compared to traditional inductive loop technology.


  • Three-dimensional presence detection of vehicles
  • Select X,Y,Z axis independently
  • Stand-alone sensor
  • Sensor stores ambient background and settings in non-volatile memory
  • Remote control module for programming and additional relay contact output
  • ULTRAMETER™ displays optimum sensitivity setting/crosstalk interference
  • DETECT-ON-STOP™ allows detection only when a vehicle has come to a complete stop
  • LRS-C1 Loop Replacement System Controller
  • Required to program and recalibrate LRS sensors
  • Only a single saw cut needed for installation
  • 3-axis magnetoresistive sensing technology
  • Magnetic field sensing in the X, Y, and Z axis
  • Works with LRS Flat Pack and LRS Direct Burial sensors sold separately from Action Industries
  • Detects ferrous objects only and ignores pedestrians
  • Detection Range: 5 ft. radius
  • Response Time: 125 ms
  • Outputs: SPDT Relay - fail safe in the event of sensor failure or power loss
  • Output Current Rating: Relay: 1 A @ 24-120 VDC
  • Connection: 10 position screw terminal
  • Operating environment: -40º to 82ºC
  • Housing Material: ABS (plastic)
  • Environmental Rating: IP30
  • Power: 12-30 VDC and 24 VAC
  • Current Draw: 40 mA (max)
  • Supply Protection: Reverse polarity and fuse protected
  • Dimensions (L x W x H): 3 inches x 0.9 inch x 2.75 inches
  • Weight: 0.15 lbs

All in stock orders typically ship the same business days or within 1-2 business days.  Cut off for same day shipping is 2:30PM Central Time.


Items with lead times typically ship in 4-7 business days.


Orders with free shipping may have longer lead times due to those items being shipped the most economical way.  Free shipping on most orders over $195.00 does not include gate operators, loop sealant, and any extreme length or weight items

Our return policy lasts for only 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund. Some items such as Gate Operators or custom parts may not be returnable or carry a restocking fee if returned.

Read return policies

Protec Controls accepts purchase orders please contact us.

NET 30

We also support Net 30 terms on our website for easy ordering. Please fill out the form to the right with your company information and we will get your account setup to place Net 30 orders.


Protec Controls accepts GSA SmartPay cards along with all major credit cards. For government quotes and purchase orders please email govsales@proteccontrols.com

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