EDI LMA-1250-LV 11-Pin Vehicle Loop Detector, 12/24V Low Voltage, Dual Relay
The LMA-1250-LV is the low-voltage member of the EDI LMA-1250 dual relay loop detector family. It is used where a compatible 11-pin box type detector installation needs two programmable relay outputs from one loop input. That second output can be important in parking, access-control, and gate systems that separate presence, pulse, or fault functions. The detector also provides DEFLECTOMETER setup feedback so the installer can see loop frequency, set sensitivity, and troubleshoot loop faults without replacing parts blindly. This is the standard LV version, not the S fail-secure version, so the original detector behavior should be checked before substitution.
This product is best selected by matching the exact part number and the job-site wiring, not just by appearance. EDI detector families include low-voltage, high-voltage, low-power, solid-state-output, relay-output, fail-safe, and fail-secure versions. Those details affect how the detector powers up, how it reports a vehicle, and how it behaves when the loop is open, shorted, or out of range.
Compatible With
This item may be used with the following products, systems, or application groups when the original part number, voltage, connector style, and wiring match:
- EDI LMA-1150 and LMA-1250 style 11-pin box type detector applications
- Gate operator control cabinets that use a matching 11-pin Amphenol box type detector connector
- Exit loop, safety loop, shadow loop, and presence loop installations where relay output detector wiring is required
- Commercial parking, access-control, drive-through, and gate operator panels using compatible 11-pin detector wiring
- Replacement work where the original detector label, wiring harness, voltage class, and fail-safe or fail-secure behavior match
Features & Specifications
| Manufacturer | EDI Traffic / Eberle Design Inc. |
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| Product Type | Low-voltage 11-pin inductive vehicle loop detector |
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| Part Number | LMA-1250-LV |
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| Application | Low-voltage vehicle detection with dual programmable relay outputs |
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| Compatible Operator Type | Gate, parking, drive-through, and access-control systems with matching detector socket or harness |
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| Voltage | 12 VDC, 24 VDC, and 24 VAC |
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| Output / Connection | Dual programmable relay outputs |
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| Detection Type | Inductive loop vehicle detection |
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| Safety Monitoring | Not a photo eye or safety edge. Use only as part of a properly designed vehicle detection system. |
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| Notes | Verify original part number, voltage, connector style, output type, and operator wiring before ordering. |
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Key Features
- Automatic tuning
- DEFLECTOMETER display for sensitivity and loop frequency feedback
- Advanced loop diagnostics for open loop, shorted loop, and sudden inductance changes
- Four frequency selections to help reduce loop crosstalk
- Ten sensitivity levels
- Sensitivity boost for taller vehicles and sliding gate applications
- Loop fault memory for troubleshooting intermittent loop problems
- Wide loop inductance range commonly listed as 20 to 2500 micro-Henries
Also Known As / Related Part Numbers
- LMA-1250-LV
- EDI-LMA-1250-LV
- LMA1250LV
- LMA 1250 LV
- LMA-1250-HV high-voltage related model
- LMA-1250S-LV fail-secure related model
- LMA-1250 Series
- LMA-1150 related single relay family
- LMH4-11 harness related accessory
Technician Note
When replacing a loop detector, do not assume the detector is the only failed part. A damaged loop, wet lead-in splice, poor terminal connection, moving gate steel near the loop, or another nearby loop on a close frequency can create symptoms that look like a bad detector. The best practice is to confirm loop resistance, insulation condition, power voltage, and output wiring before replacing parts.
Before Ordering
- Match the exact part number or approved replacement reference from the original detector label.
- Confirm voltage class before applying power. Low-voltage and high-voltage versions are not interchangeable.
- Confirm connector style, harness type, and pinout before replacing a 10-pin or 11-pin detector.
- Confirm whether the application needs solid-state outputs or relay outputs.
- Confirm fail-safe or fail-secure behavior when the original detector uses an S version.
- Check loop wire, lead-in splices, and frequency separation if the original complaint is intermittent detection or false calls.
- Do not use a loop detector as a substitute for required monitored photo eyes, safety edges, or other entrapment protection devices.
Professional Advisory
Loop detector wiring is often located inside the same cabinet as operator power wiring. If the cabinet has high voltage, damaged wiring, water intrusion, missing safety devices, or unpredictable gate movement, the system should be inspected by a qualified gate technician before replacement parts are installed.
Product Q&A
What voltage does the LMA-1250-LV use?
The LV version is commonly listed for 12 VDC, 24 VDC, and 24 VAC detector power.
What is the main advantage of the LMA-1250 family?
It provides dual programmable relay outputs, which gives the installer more output options than a single relay detector.
Is LMA-1250-LV the same as LMA-1250S-LV?
No. The S version is the fail-secure version. Match the exact original part number when fault behavior matters.
Can this detector work with the LMH4-11 harness?
Yes, it is commonly used with the LMH4-11 harness in 11-pin box type detector installations.
What should be checked if vehicles are not being detected?
Check loop continuity, lead-in splices, loop frequency separation, detector sensitivity, power voltage, and relay output wiring.
