EMX 2303-2 LRS-C1 Loop Replacement System Control Unit
The EMX 2303 2 LRS C1 control unit delivers reliable vehicle presence detection using advanced three axis magnetoresistive sensing. It supports above or below ground installation without traditional loops, reducing labor and surface disruption. Detect on Stop technology activates only when a vehicle fully stops, helping eliminate unwanted triggers from cross traffic in confined areas. Compact construction and flexible outputs make it ideal for access control and parking applications. :contentReference[oaicite:1]{index=1}
- Three dimensional vehicle presence detection with selectable sensing axes
- Detect on Stop ignores moving cross traffic in tight spaces
- Loop free design reduces installation time and cost
- Supports pulse or continuous presence output modes
- Wide operating temperature range for demanding environments
Enables three-dimensional vehicle presence detection using advanced 3-axis magnetoresistive sensing technology.
Allows independent selection and configuration of X, Y, and Z axes to optimize detection sensitivity.
Features a compact, loop-less design that simplifies installation and reduces costs compared to traditional inductive loops.
Supports both above-ground and below-ground installations for maximum flexibility in deployment.
Equipped with DETECT-ON-STOP™ (DOS®) technology to ignore cross traffic and detect only stationary vehicles.
Stores ambient background and configuration settings in non-volatile memory for reliable operation.
Includes a ULTRAMETER™ display that helps installers fine-tune sensitivity and identify crosstalk interference.
Offers dual outputs with SPDT relay and NPN (open collector) configurations for versatile integration.
Rugged sensor housing rated IP69K and control unit housing rated IP30 for dependable performance in harsh environments.
Remote control module available for convenient programming and additional relay output capabilities.
Automatically compensates for environmental changes with built-in tracking and magnetic field nulling features.
Supports both pulse and presence output modes, enabling flexible response configurations.
Wide operating temperature range from -40°F to 180°F ensures reliable performance in extreme conditions.
Reverse polarity and fuse protection built into the power supply for enhanced system safety.
Compact unit dimensions and simple screw terminal connections streamline setup and maintenance.
| MODEL NAME | EMX 2303-2 LRS-C1 Loop Replacement System Control Unit |
| DEVICE TYPE | Control Unit |
| SENSING TECHNOLOGY | 3-axis magnetoresistive |
| DETECTION FEATURE | Three-dimensional presence detection of vehicles |
| INSTALLATION | Above or below ground |
| IGNORES CROSS TRAFFIC | Yes, with DETECT-ON-STOP™ feature |
| CONTROL UNIT HOUSING | ABS |
| CONTROL UNIT ENVIRONMENTAL RATING | IP30 |
| CONTROL UNIT POWER SUPPLY | 12-30 VDC and 24 VAC |
| CONTROL UNIT CURRENT DRAW | 40 mA max |
| CONTROL UNIT DIMENSIONS | 76mm x 22mm x 70mm |
| CONTROL UNIT INDICATORS | Green LED (Power/Fault), Red LED (Detect) |
| CONTROL UNIT OUTPUTS | SPDT relay/NPN (open collector) |
| CONTROL UNIT OUTPUT RATINGS | Relay: 1A @ 24VDC–120VAC, NPN: 50 mA max |
| CONNECTION TYPE | 10 position screw terminal |
| SENSOR OUTPUT | NPN (open collector) |
| SENSOR OUTPUT RATING | 50 mA |
| SENSOR CONNECTION | 5 conductor direct burial |
| SENSOR HOUSING | DB: PVC; FP: Polyamide |
| SENSOR ENVIRONMENTAL RATING | IP69K |
| SENSOR POWER SUPPLY | 12-30 VDC |
| SENSOR CURRENT DRAW | 10 mA max |
| SENSOR DIMENSIONS | DB:102mm x 27mm; FP: 86mm x 21mm x 8mm |
| SENSITIVITY LEVELS | 10 levels (0-9) |
| AXIS SENSITIVITY | 512 counts/gauss (typical) |
| ENVIRONMENTAL TRACKING | Automatic compensation |
| LOCAL FIELD NULLING | Averages local field signature in any sensor orientation |
| DETECTION RANGE | 1.5m (5ft.) |
| PULSE/PRESENCE MODE | Selectable |
| DETECT-ON-STOP | Requires vehicle to stop for 1-2 seconds |
| 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 INDICATORS | Green LED (Power), 2x Red LEDs (Detect) |
| CONFIGURATION SELECTOR | 10 position rotary switch |
| RELAY OUTPUTS | Relay 1: SPDT (Form C), Relay 2: SPST (Form A) |
| LOGIC OUTPUT RATINGS | 1A @ 24VDC/120VAC |
| LOGIC INTERFACE HOUSING | ABS |
| LOGIC INTERFACE ENCLOSURE | IP30 |
| LOGIC INTERFACE DIMENSIONS | 73mm x 38mm x 78mm |
| CONNECTOR TYPE | 11 pin male connector (JEDEC B11-88) |
| OPERATING CURRENT | 22/35mA (one sensor), 33/60mA (two sensors) |
EMX 2303-2 LRS-C1 Loop Replacement System Control Unit from Alfa Iris offers cutting-edge vehicle detection with advanced three-dimensional presence sensing. Utilizing 3-axis magnetoresistive technology, this system eliminates the need for traditional inductive loops, simplifying installation and reducing cost. Its compact design is suitable for both above and below ground installations, making it ideal for access control in commercial and high-traffic environments.
Advanced Detection with DETECT-ON-STOP™
The LRS-C1 features the exclusive DETECT-ON-STOP™ (DOS®) technology, detecting vehicles only when they come to a complete stop. This is perfect for tight spaces and areas where cross traffic must be ignored. The control unit and sensor work in tandem to store ambient settings, null local magnetic fields, and adapt to environmental changes, ensuring consistent performance across all applications.
- Three-axis (X, Y, Z) magnetoresistive detection
- DETECT-ON-STOP™ eliminates false triggers from moving cross traffic
- Standalone sensor with ambient memory and local magnetic field nulling
- Compact, loop-less design minimizes installation effort
- ULTRAMETER™ visual feedback for optimal sensitivity setting
Versatile Integration and Reliable Performance
Designed for integration with vehicle access control systems, the EMX 2303-2 supports both relay and NPN output types. It comes with a remote control module for configuration and monitoring, as well as logic interface support with LED indicators and multiple output relays. Installers benefit from the system's automatic compensation, environmental tracking, and wide operating temperature range.
- Sensor and control unit rated for -40°C to 82°C (-40°F to 180°F)
- Compatible with 12–30 VDC and 24 VAC power supplies
- Compact housing: Control Unit (76mm x 22mm x 70mm), Sensor (up to 102mm length)
- Environmental ratings: IP30 (control unit), IP69K (sensor)
- Relay and NPN outputs for flexible integration
Access control professionals looking for a highly sensitive, reliable vehicle detection system will find the EMX 2303-2 LRS-C1 a top-tier solution. Available from Alfa Iris through leading USA security and automation dealers.
Technical Specifications
- Model: EMX 2303-2 LRS-C1
- Sensing Technology: 3-axis magnetoresistive
- Sensitivity: 10 levels (0–9), 512 counts/gauss typical
- Detection Range: Up to 1.5m (5 ft)
- Outputs: SPDT Relay / NPN (open collector)
- Power Input: 12–30 VDC / 24 VAC
- Environmental Rating: IP30 (Control Unit), IP69K (Sensor)
- Operating Environment: -40°C to 82°C (-40°F to 180°F)
- Control Unit Dimensions: 76mm x 22mm x 70mm
- Sensor Dimensions: up to 102mm x 27mm
- Additional Module: Remote logic interface with dual relays and LED indicators
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