Product Overview
The DML-9LP probe kit is a compact low-power vehicle detector system that uses Diablo mini-loop/probe technology instead of a traditional multi-turn loop. The sensor is buried under the driveway surface and connected to the detector with lead-in cable, creating a point-style vehicle detection area that can be useful for free-exit driveways, low-power gate systems, and retrofit jobs where cutting a full-size loop is not ideal. It is not a universal replacement for a standard loop detector because the detection area and mode are different. Some references note pulse-only operation for probe-style detection, so it should not be used where a maintained presence loop is required unless the manual confirms the application. Because the CSV row uses DSP-9LP while the product name says DML-9LP, verify the exact part on the box or supplier record.
Compatible With
- Select gate operators and access-control panels that accept relay-output free-exit detector signals
- Solar and battery-supported gate installations requiring very low detector current draw
- Diablo mini-loop/probe vehicle detection applications with 75 ft lead requirement
- Free-exit or point-detection layouts where a full-size loop is not practical
- Systems where DML-9LP probe detection mode, power, and output wiring are confirmed
Features and Specifications
| Manufacturer | Diablo Controls |
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| Product Type | Low power free-exit probe detector kit |
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| Part Number | DML-9LP; uploaded mfgid shows DSP-9LP |
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| Application | Free-exit or point vehicle detection |
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| Compatible Operator Type | Gate or access controls accepting detector relay output |
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| Voltage | 10 to 30 VAC/DC |
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| Lead Length | 75 ft listed application |
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| Sensor Type | Diablo mini-loop/probe |
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| Notes | Manual review recommended due to DML-9LP / DSP-9LP mismatch |
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Also Known As / Related Part Numbers
- DML-9LP
- DML9LP
- DML-9 LP
- DSP-9LP
- DSP9LP
- DML-9LP Probe Kit 75
- Diablo free exit probe kit 75 ft
- Diablo mini-loop probe kit
Technician Note
Match the detector to the original part number, voltage, connector style, loop function, and output behavior. If a detector still shows a loop fault after replacement, test the loop and lead-in wiring before assuming the new detector is defective.
Before Ordering Checklist
- Confirm the exact Diablo Controls part number on the old detector or supplier record
- Verify the control voltage available at the detector connection
- Confirm the connector style, terminal layout, or plug-in board port
- Check whether the loop function is exit, safety, shadow, arming, hold-open, or presence
- Inspect loop resistance, lead-in splices, and water intrusion if the original detector failed
Professional Advisory
Loop detectors are vehicle-detection accessories and must be installed as part of a code-compliant gate or access-control system. Do not bypass required monitored photo eyes, monitored safety edges, or other entrapment-protection devices. For high-voltage wiring, unsafe gate movement, or repeated loop faults, use a qualified gate technician.
Important Ordering Warnings
Similar Diablo detector numbers may not be interchangeable. Pay close attention to fail-safe versus fail-secure operation, low-voltage versus line-voltage power, terminal-block versus plug-in construction, and standard loop versus mini-loop/probe operation.
Product Questions and Answers
Why does the row mention DSP-9LP and DML-9LP?
The uploaded mfgid shows DSP-9LP while the product name references DML-9LP. The actual package label or supplier record should be checked before upload.
Is DML-9LP used with a standard loop?
No. It is associated with Diablo mini-loop/probe style detection, not a conventional full-size loop field.
Is this good for solar gate systems?
Yes, it is commonly used in low-power gate applications because it runs from low-voltage AC or DC power with very low standby current.
Can the probe be used as a safety presence loop?
Do not assume that. Probe-style detection is commonly used for free-exit or point detection and may not provide maintained presence detection.
What should be confirmed before ordering this kit?
Confirm the exact model number, lead length, detector output wiring, power supply, and whether the site needs pulse or maintained presence detection.
