EMX CARSENSE303 MAGNETORESISTIVE VEHICLE DETECTOR KIT WITH 50FT LEAD WIRE
The EMX CS303-C1-FP-50 is a complete CarSense 303 vehicle detector kit built around magnetoresistive sensing instead of an inductive loop wire. The controller reads the connected flat pack sensor and looks for changes in the local magnetic field caused by a vehicle. That makes it useful where a compact direct burial or saw-cut style sensor is preferred over a full loop cut. In the field, this part is commonly selected for automatic gate exits, parking control, traffic counting, car wash lanes, drive-thru lanes, barrier arms, and industrial doors where reliable vehicle presence detection is needed. The controller is still required for setup and recalibration, so replacing only the sensor or only the controller should be done by matching the existing CS303 part number and installation style.
Compatible With
This compatibility list is written for common field use and product-family matching. Always verify the operator manual, control-board input, socket, wiring, voltage, and installed part number before ordering.
- EMX CarSense 303 CS303-C-1 controller applications
- CS303-FP-50 flat pack direct burial sensor installations
- Select CS303-FP and CS303-DB sensor applications when matched by controller and lead length
- Automatic gate free-exit, hold-open, presence, and vehicle count inputs
- Barrier gate, parking, toll booth, drive-thru, car wash, loading dock, and industrial door detection points
- Access-control panels or gate operators that accept dry contact or compatible NPN/open collector detector output
Features and Specifications
| Manufacturer | EMX Industries |
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| Product Type | Magnetoresistive vehicle detector kit |
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| Part Number | CS303-C1-FP-50 |
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| Sensor Included | 50 ft flat pack direct burial sensor |
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| Controller | CS303-C-1 control unit |
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| Detection Technology | 3-axis magnetoresistive vehicle sensing |
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| Detection Range | Up to about 5 ft radius depending on sensitivity, site conditions, and vehicle type |
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| Power | Controller uses 12-30 VDC or 24 VAC; sensor uses 12-30 VDC |
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| Outputs | SPDT relay and NPN/open collector sensor output depending on wiring |
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| Common Applications | Gate exits, barrier gates, parking control, drive-thru lanes, car washes, loading docks, vehicle counting |
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Also Known As / Related Part Numbers
- CS303-C1-FP-50
- CS303-C-1-FP-50
- CS303-C-1
- CS303-FP-50
- CarSense303
- CarSense 303
- EMX CarSense 303 Kit
- CS303 flat pack 50 ft sensor kit
- Related: CS303-FP-100, CS303-DB-50, CS303-DB-100, CS303-L
Technician Note
CarSense 303 detection depends on sensor placement, local magnetic conditions, sensor style, and controller setup. Replacing only one part of the system should be done by matching the exact controller and sensor reference.
Before Ordering
- Confirm flat pack versus probe sensor style.
- Confirm 50 ft lead length and controller model.
- Check controller power and output wiring.
- Check whether the detector is used for free exit, presence, hold-open, or counting.
- Recalibrate and test detection after installation.
Professional Advisory
Vehicle detection connected to a moving gate should be installed and tested so the gate operates safely. For uncertain wiring, controller calibration, or unsafe movement, use a qualified gate technician.
Product Questions and Answers
Is the CS303-C1-FP-50 the same as a standard loop detector?
No. The CS303 uses a magnetoresistive sensor instead of a traditional inductive loop wire. It still connects to gate or access equipment as a vehicle detector, but the sensor style and installation method are different.
Does this kit include the 50 ft sensor lead?
Yes, this row is written for the CS303-C1-FP-50 kit with a 50 ft flat pack sensor. Confirm your existing sensor style and lead length before replacing a field-installed unit.
Can the CS303 be used for gate exit detection?
Yes, it is commonly used for gate free-exit and presence detection when wired to a compatible operator or access controller input. The gate operator must be configured correctly for the intended input function.
Can I replace only the sensor without the controller?
Only when the sensor part number, lead length, and controller compatibility are confirmed. The controller is required for programming and recalibration of the CS303 sensor.
What should be checked before ordering this kit?
Check whether the site uses a flat pack or probe sensor, the required lead length, available power, output wiring, mounting location, and whether the existing system uses CS303 or a different loop detector family.
