EMX 2311-2 LRS-DB-100 Loop Replacement Vehicle Sensor Direct Burial Probe 100 Foot Lead
This loop replacement vehicle sensor delivers reliable three dimensional presence detection using advanced magnetoresistive technology. Designed for above ground or direct burial installation, it detects vehicles accurately while reducing installation time and cost. The Detect On Stop feature helps ignore moving cross traffic in tight spaces, making it ideal for gates, access control, and parking applications. The compact design eliminates traditional loop cutting while maintaining dependable vehicle detection in demanding environments.
- Three dimensional vehicle presence detection with adjustable axis sensitivity
- Detect On Stop feature ignores cross traffic in confined areas
- Direct burial probe with long lead for flexible installation
- Rugged sensor design suitable for harsh outdoor environments
- Supports pulse or continuous presence output modes
Features advanced 3-axis magnetoresistive sensing for highly sensitive vehicle detection in any orientation.
Offers three-dimensional presence detection with selectable X, Y, and Z axis sensitivity for precise configuration.
Equipped with DETECT-ON-STOP™ technology to detect only when vehicles are completely stopped, ideal for tight traffic areas.
Compact, loop-less design reduces installation complexity and costs compared to traditional inductive loops.
Capable of both above-ground and direct burial installations with a durable 100' lead probe.
Stores ambient background and user settings in non-volatile memory for consistent operation.
Includes ULTRAMETER™ display to assist in optimizing sensitivity and minimizing crosstalk interference.
Designed with remote programming capabilities and optional relay contact output via a control module.
Operates in extreme temperatures from -40°F to 180°F, ensuring year-round reliability.
IP69K-rated sensor housing provides maximum protection against dust and high-pressure water ingress.
Relay and NPN outputs support both pulse and constant presence detection modes.
Automatic environmental compensation for stable performance under varying magnetic conditions.
Reverse polarity and fuse-protected circuitry safeguard the system from electrical damage.
Ideal for applications needing accurate vehicle presence detection without the need for surface cuts.
Meets industrial standards for reliability with robust ABS and PVC housing materials.
| MODEL NAME | EMX 2311-2 LRS-DB-100 Loop Replacement Vehicle Sensor |
| LEAD LENGTH | 100' |
| SENSING TECHNOLOGY | 3-axis magnetoresistive |
| AXIS MEASUREMENTS | X, Y, Z |
| INSTALLATION | Above or below ground |
| FEATURE - VEHICLE DETECTION | Three-dimensional presence detection |
| FEATURE - CROSS TRAFFIC IGNORE | DETECT-ON-STOP™ (DOS®) |
| FEATURE - DETECTION RANGE | 1.5m (5ft.) |
| FEATURE - LOCAL FIELD NULLING | Averages local field signature in any orientation |
| FEATURE - AMBIENT STORAGE | Stores ambient background and settings in non-volatile memory |
| FEATURE - ULTRAMETER™ | Displays optimum sensitivity/crosstalk interference |
| SENSITIVITY LEVELS | 10 levels (0-9) |
| AXIS SENSITIVITY | 512 counts/gauss (typical) |
| PULSE/PRESENCE MODE | Selectable output modes |
| DETECT-ON-STOP | Requires 1-2 seconds of vehicle stop |
| ENVIRONMENTAL TRACKING | Automatic compensation |
| POWER SUPPLY (CONTROL UNIT) | 12-30 VDC and 24 VAC |
| CURRENT DRAW (CONTROL UNIT) | 40 mA max |
| CONTROL UNIT OUTPUTS | SPDT relay/NPN (open collector) |
| RELAY RATING | 1A @ 24VDC - 120VAC |
| NPN RATING | 50 mA (max) |
| CONTROL UNIT HOUSING | ABS |
| CONTROL UNIT RATING | IP30 |
| CONTROL UNIT DIMENSIONS | 76mm x 22mm x 70mm |
| CONTROL UNIT CONNECTION | 10 position screw terminal |
| SENSOR OUTPUTS | NPN (open collector) |
| SENSOR OUTPUT RATING | 50 mA |
| SENSOR CONNECTION | 5 conductor direct burial |
| SENSOR HOUSING | DB: PVC; FP: Polyamide |
| SENSOR RATING | IP69K |
| POWER SUPPLY (SENSOR) | 12-30 VDC |
| CURRENT DRAW (SENSOR) | 10 mA max |
| SENSOR DIMENSIONS | DB: 102mm x 27mm; FP: 86mm x 21mm x 8mm |
| OPERATING TEMPERATURE | -40°C to 82°C (-40°F to 180°F) |
| SUPPLY PROTECTION | Reverse polarity and fuse protected |
| LOGIC INTERFACE INDICATORS | Green LED (Power), 2x Red LEDs (Detect) |
| LOGIC INTERFACE CONFIG | 10 position rotary switch |
| LOGIC INTERFACE OUTPUTS | Relay 1: SPDT (form C), Relay 2: SPST (form A) |
| LOGIC INTERFACE RATING | 1A @ 24 VDC / 120 VAC |
| LOGIC INTERFACE POWER | 12-30 VDC and 24 VAC |
| LOGIC INTERFACE CURRENT | One sensor: 22/35mA; Two sensors: 33/60mA |
| LOGIC INTERFACE ENVIRONMENT | -40°C to 82°C; 0-95% RH |
| LOGIC INTERFACE HOUSING | ABS, IP30 |
| LOGIC INTERFACE DIMENSIONS | 73mm x 38mm x 78mm |
| LOGIC INTERFACE CONNECTOR | 11 pin male connector (JEDEC B11-88) |
EMX 2311-2 LRS-DB-100 Loop Replacement Vehicle Sensor from Alfa Iris offers a compact, loop-less solution for advanced vehicle detection in commercial and industrial settings. Featuring a Direct Burial Probe with 100' Lead, it ensures three-dimensional presence detection using state-of-the-art magnetoresistive sensing technology. Ideal for applications that demand precision and minimal installation disruption.
Revolutionary Detection with DETECT-ON-STOP™
The sensor includes the exclusive DETECT-ON-STOP™ function, allowing detection only when a vehicle has come to a complete stop—perfect for avoiding false triggers in tight, high-traffic areas. With independent X, Y, Z axis sensitivity and automatic environmental compensation, this sensor adapts seamlessly to any installation condition, whether above or below ground.
- 100' lead with direct burial probe
- Three-axis (X, Y, Z) magnetoresistive detection
- DETECT-ON-STOP™ feature eliminates cross-traffic interference
- Loop-less design reduces installation cost and complexity
- Stand-alone sensor with stored ambient background memory
Precision-Controlled for Versatile Applications
The included control unit and remote module offer enhanced configurability and diagnostics. With up to 10 sensitivity levels, relay/NPN outputs, and an intuitive ULTRAMETER™ for interference detection, integrators benefit from accurate, real-time feedback. This sensor system is ideal for use in parking systems, automated gates, and access control environments.
- Detection range: up to 5 ft (1.5m)
- Environmental ratings: IP69K (sensor), IP30 (control unit)
- Power: 12-30 VDC / 24 VAC
- Operating temp: -40°F to 180°F (-40°C to 82°C)
- Pulse or constant presence output
- Configuration via rotary switch and LED indicators
Ideal for High-Accuracy Vehicle Detection
Designed for seamless integration into modern access systems, the EMX 2311-2 LRS-DB-100 is perfect for environments demanding reliability, durability, and accurate vehicle presence detection. Whether deployed in residential communities, gated facilities, or commercial parking systems, this sensor offers unmatched performance without the complexity of traditional loop systems.
- Parking access systems
- Vehicle gates in residential or industrial zones
- Automated commercial entry systems
- Retrofit or new installations requiring low-impact setup
Technical Specifications
- Model: EMX 2311-2 LRS-DB-100
- Sensing Technology: 3-axis magnetoresistive
- Sensitivity Levels: 10 (0-9)
- Detection Output: SPDT relay/NPN (open collector)
- Power: 12-30 VDC and 24 VAC
- Environmental Tracking: Automatic
- Sensor Housing: PVC (DB), Polyamide (FP)
- Dimensions: Sensor - 102mm x 27mm; Control Unit - 76mm x 22mm x 70mm






