EMX VMD202 50FT VEHICLE MOTION DETECTOR CAR EXIT OR SAFETY DETECTION SENSOR
The EMX VMD202 50 ft vehicle motion detector is a compact one-piece vehicle detector used when an installer needs a discreet buried sensor without a traditional saw-cut loop. The probe and electronics are built into the same sealed assembly, which allows the detector to be placed next to a driveway, roadway, or controlled entrance and wired back to the gate operator or access-control equipment.
The VMD202 senses moving ferrous metal by monitoring changes in the earths magnetic field near the sensor. In gate and parking applications it is commonly used for free exit, vehicle approach detection, driveway alerts, or triggering an access-control input. It is not a vehicle presence detector and should not be relied on to hold a gate open under a stopped car.
This version includes the 50 ft lead without the VMD202-R sensitivity remote. A VMD202-R remote may be used to set sensitivity during installation, and the stored setting is retained after power loss.
Proper placement is important. Large moving gate frames, reinforced concrete, nearby steel, underground utilities, and vehicle speed can all change the detection area. For dependable performance, match the lead length and power source to the installation and test the detector with the actual vehicles using the entrance.
Compatible With
Use the VMD202 with gate, door, barrier, alarm, and access-control equipment that can accept the detector output and operate within the sensor power range. Confirm whether the application needs motion detection or true vehicle presence detection.
- EMX VMD202 vehicle motion detector family
- VMD202-50 and VMD202-100 installations with matching lead length requirements
- VMD202-R sensitivity remote setup accessory
- Automatic swing gate operators with compatible free-exit or open inputs
- Automatic slide gate operators with compatible free-exit or open inputs
- Parking barrier, overhead door, and access-control systems using a compatible trigger input
- Solar and low-current gate operator applications within the listed voltage range
- Driveway vehicle approach, free-exit, and security annunciation applications
Features & Specifications
| Manufacturer | EMX Industries |
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| Product Type | One-piece vehicle motion detector |
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| Part Number | VMD202-50 |
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| Lead Length | 50 ft |
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| Application | Free exit, vehicle approach, driveway detection, access control, and security trigger use |
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| Detection Type | Moving ferrous vehicle / magnetic field disturbance |
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| Typical Detection Range | Up to about 12 ft depending on vehicle size, speed, sensitivity, and placement |
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| Power | 9-41 VDC or 6-29 VAC range commonly listed for VMD202 applications |
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| Current Draw | Low-power design, commonly listed around 250 uA standby and 12 mA activated |
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| Sensitivity Adjustment | 10 sensitivity levels using VMD202-R remote |
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| Included Components | Detector assembly with lead |
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| Notes | Motion detector only; not a stopped-vehicle presence loop |
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Also Known As / Related Part Numbers
- VMD202-50
- VMD202
- VMD 202
- VMD202-50
- VMD202 50FT
- VMD202 50 ft
- VMD202-R sensitivity remote
- VMD202-50
- VMD202-100
- VMD202-150 related family reference
Technician Note
The VMD202 is often used where a loop cut is not practical, but it should be tested on the actual driveway after burial depth and probe location are chosen. If the site needs a gate to remain open while a vehicle is stopped, use the correct presence detection and safety devices for that operator.
Before Ordering
- Confirm the lead length before ordering.
- Decide whether the sensitivity remote is needed or already available.
- Verify the power source and input wiring on the gate operator or access panel.
- Confirm the application is moving vehicle detection, not continuous presence detection.
- Plan sensor placement away from moving gate steel, reinforced concrete, and unwanted traffic paths.
- Test sensitivity with the expected vehicles before final backfill or concrete work.
Important Ordering Warnings
- Do not use the VMD202 as the only entrapment-protection device.
- The detector may not continue to detect a vehicle that has stopped over or near the sensor.
- Remote-kit and non-remote versions use the same detector family but differ by included setup accessory.
Professional Advisory
Low-voltage wiring should still be installed according to the operator instructions and local code. For unsafe gate movement, missing photo eyes, or unclear control wiring, have the system checked by a qualified gate technician.
Product Questions & Answers
What does the VMD202 detect?
The VMD202 detects moving ferrous vehicles by sensing changes in the magnetic field near the buried detector. It is not intended to detect people, animals, bicycles without enough ferrous metal, or stationary vehicles.
What is the VMD202-R remote used for?
The VMD202-R is used to adjust the VMD202 sensitivity level. Once the detector is set, the setting is stored in non-volatile memory.
When should I choose the 50 ft VMD202 version?
Choose the 50 ft version when that lead length matches the distance from the planned sensor location to the operator, access panel, or junction point without needing an unsupported splice.
Can the VMD202 be used on solar gate operators?
Yes, it is commonly selected for solar and low-power gate applications when the voltage range, current draw, and operator input are compatible.
Is the VMD202 a safety loop replacement?
Not by itself. It can be used for free-exit or vehicle motion detection, but closing protection and entrapment protection must be handled by the proper monitored safety devices required for the operator and site.
