EMX 2301-2 LRS-DB-50 Loop Replacement Vehicle Sensor with 50 Foot Lead
This loop replacement vehicle sensor delivers reliable three dimensional vehicle presence detection without cutting pavement. Designed for above or below ground installation, it uses advanced magnetic field sensing to detect stopped vehicles while ignoring cross traffic in tight areas. The compact direct burial probe simplifies installation and reduces long term maintenance while maintaining accurate performance in demanding outdoor environments. Ideal for access control parking and gate automation applications. :contentReference[oaicite:1]{index=1}
- Three dimensional magnetic vehicle presence detection
- Detect on stop feature ignores moving cross traffic
- Direct burial probe with long integrated lead
- Works above ground or below ground installations
- Reduces cost compared to traditional loop systems
Utilizes advanced 3-axis magnetoresistive sensing technology for highly accurate vehicle detection.
Three-dimensional presence detection with selectable X, Y, and Z axis sensitivity for precise control.
Includes a 50' lead direct burial probe for convenient underground installations.
Features DETECT-ON-STOP™ functionality, detecting vehicles only when fully stopped to reduce false triggers from cross traffic.
Compact, loop-less design lowers installation costs compared to traditional inductive loops.
Sensor stores background conditions and settings in non-volatile memory for consistent performance.
Equipped with ULTRAMETER™ for optimal sensitivity setting and cross-talk interference monitoring.
Operates in extreme environmental conditions from -40°F to 180°F, with rugged housing rated IP69K for the sensor and IP30 for control unit.
Supports both pulse and presence detection outputs via relay or NPN open collector.
Control unit includes visual indicators for power/fault and detection, enhancing system diagnostics.
Offers automatic environmental compensation and local magnetic field nulling for stable operation in variable settings.
Remote control module enables programming and provides an additional relay contact output for flexible integration.
Compatible with 12-30 VDC and 24 VAC power supplies, consuming minimal current for energy-efficient use.
Sensor and logic interfaces are protected against reverse polarity and include internal fuse protection.
Ideal for vehicle detection in tight spaces, drive-thrus, gates, and barrier systems requiring precise presence monitoring.
| MODEL NAME | EMX 2301-2 LRS-DB-50 Loop Replacement Vehicle Sensor |
| LEAD LENGTH | 50 feet |
| DETECTION METHOD | 3-axis magnetoresistive sensing |
| AXIS DETECTION | X, Y, Z independently selectable |
| DETECT-ON-STOP™ FEATURE | Yes, vehicle must stop 1–2 seconds for detection |
| SENSITIVITY | 10 levels (0-9) |
| AXIS SENSITIVITY | 512 counts/gauss (typical) |
| DETECTION RANGE | 1.5 meters (5 feet) |
| INSTALLATION TYPE | Above or below ground, direct burial |
| SENSOR OUTPUT | NPN (open collector) |
| SENSOR OUTPUT RATING | 50 mA |
| SENSOR POWER SUPPLY | 12-30 VDC |
| SENSOR CURRENT DRAW | 10 mA max |
| SENSOR HOUSING | DB: PVC; FP: Polyamide |
| SENSOR ENVIRONMENTAL RATING | IP69K |
| SENSOR DIMENSIONS | DB: 102mm x 27mm; FP: 86mm x 21mm x 8mm |
| CONTROL UNIT POWER SUPPLY | 12-30 VDC and 24 VAC |
| CONTROL UNIT CURRENT DRAW | 40 mA max |
| CONTROL UNIT OUTPUT | SPDT relay/NPN (open collector) |
| CONTROL UNIT OUTPUT RATING | Relay: 1A @ 24VDC–120VAC; NPN: 50 mA |
| CONTROL UNIT CONNECTION | 10-position screw terminal |
| CONTROL UNIT HOUSING | ABS |
| CONTROL UNIT ENVIRONMENTAL RATING | IP30 |
| CONTROL UNIT DIMENSIONS | 76mm x 22mm x 70mm |
| REMOTE MODULE FEATURES | Programming and relay output |
| ULTRAMETER™ | Displays sensitivity/crosstalk interference |
| ENVIRONMENTAL TRACKING | Automatic compensation |
| MAGNETIC FIELD NULLING | Averages local signature in any orientation |
| PULSE/PRESENCE MODE | Selectable output modes |
| OPERATING TEMPERATURE | -40°C to 82°C (-40°F to 180°F) |
| SUPPLY PROTECTION | Reverse polarity and fuse protected |
| LOGIC INTERFACE POWER | 12-30 VDC and 24 VAC |
| LOGIC INTERFACE OUTPUTS | Relay 1: SPDT (form C), Relay 2: SPST (form A) |
| LOGIC INTERFACE OUTPUT RATING | 1A @ 24 VDC/120 VAC |
| LOGIC INTERFACE POWER DRAW | One sensor: 22/35mA; Two sensors: 33/60mA |
| LOGIC INTERFACE HOUSING | ABS |
| LOGIC INTERFACE ENCLOSURE | IP30 |
| LOGIC INTERFACE CONNECTOR | 11-pin male (JEDEC B11-88) |
| LOGIC INTERFACE CONFIGURATION | 10-position rotary switch |
| OPERATING ENVIRONMENT | -40°C to 82°C, 0–95% relative humidity |
| STAND-ALONE FUNCTION | Yes |
| NON-VOLATILE MEMORY | Stores ambient background and settings |
| APPLICATION | Vehicle presence detection in tight spaces |
| INSTALLATION ADVANTAGE | Loop-less, no need for 9 ground cuts |
EMX 2301-2 LRS-DB-50 Loop Replacement Vehicle Sensor from Alfa Iris offers advanced, cost-effective vehicle detection without the need for traditional loop cuts. Equipped with a 50' direct burial lead and 3-axis magnetoresistive sensing, it ensures accurate and dependable presence detection both above and below ground.
Advanced Detection Technology
This loop-less sensor uses cutting-edge 3D magnetic field measurement in the X, Y, and Z axes, dramatically improving detection sensitivity. Its compact design is perfect for applications in tight spaces where conventional inductive loops are impractical. The DETECT-ON-STOP™ (DOS®) feature enables vehicle detection only when stopped, minimizing false triggers from cross traffic.
- Three-dimensional magnetic sensing (X, Y, Z axis)
- Loop-less design reduces installation time and cost
- DETECT-ON-STOP™ ignores moving traffic
- Above or below ground installation
- Non-volatile memory retains settings
- Remote programming and relay control module included
Reliable and Rugged Performance
Designed to operate in extreme environments, the sensor and control unit are built with durable materials and high IP ratings for protection against harsh weather and direct burial. It operates over a wide temperature range and is reverse polarity and fuse protected.
- Sensor Rating: IP69K / Control Unit Rating: IP30
- Temperature range: -40°F to 180°F (-40°C to 82°C)
- Power supply: 12–30 VDC and 24 VAC
- Output: SPDT relay / NPN (open collector)
- Sensitivity: 10-level adjustable with local magnetic nulling
- Real-time feedback via ULTRAMETER™ display
Applications
Perfect for vehicle detection at gate systems, parking facilities, and tight access points where precise and reliable presence sensing is required. Installation is simple, and the system is compatible with a wide range of commercial gate and traffic control systems.
- Commercial gate and barrier systems
- Parking garages and surface lots
- Industrial vehicle access control
- Urban intersections with limited space
Technical Specifications
- Model: EMX 2301-2 LRS-DB-50
- Sensing Range: Up to 5 ft (1.5m)
- Sensor Output: NPN, 50 mA max
- Control Unit Output: SPDT relay, 1A @ 24VDC/120VAC
- Dimensions (Sensor): 102mm x 27mm
- Dimensions (Control Unit): 76mm x 22mm x 70mm
- Detection Logic: Pulse or Presence
- Connector: 11-pin male (JEDEC B11-88)
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