Product Overview
The DSP-6LP is a small-format Diablo Controls vehicle loop detector built for low-current gate and access-control installations. It watches an inductive loop installed in the driveway or traffic lane and changes its relay output when a vehicle is detected over that loop. This makes it useful for free-exit, presence, hold-open, arming, or auxiliary vehicle-detection circuits when the operator or access-control panel has the correct input for a relay detector. The low-current design is especially useful on solar gate systems or battery-backed low-voltage operators where every accessory load matters. Correct fitment depends on more than the part number: the loop must be in usable condition, the detector must match the control voltage available at the operator, and the output behavior must match the way the loop input is being used. For safety-loop use, confirm the fail mode and UL325 requirements before relying on any loop detector as part of the protection system.
Compatible With
- Select gate operators, barrier operators, parking controls, and access-control panels that accept a low-voltage relay-output loop detector
- Low-voltage installations supplying 10 to 30 volts AC or DC
- Standard in-ground inductive loop applications within the supported loop inductance range
- Solar or battery-supported gate systems where low standby current is needed
- Free-exit, presence, arming, hold-open, or auxiliary vehicle detection inputs when relay contact logic is supported
Features and Specifications
| Manufacturer | Diablo Controls |
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| Product Type | Low power vehicle loop detector |
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| Part Number | DSP-6LP |
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| Application | Vehicle detection for gate, parking, and access-control systems |
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| Compatible Operator Type | Low-voltage operators or controls accepting relay-output loop detection |
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| Voltage | 10 to 30 VAC/DC |
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| Output | Relay contacts |
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| Loop Type | Standard in-ground inductive loop |
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| Notes | Commonly listed as fail-secure; verify safety-loop use before ordering |
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Also Known As / Related Part Numbers
- DSP-6LP
- DSP6LP
- DSP-6 LP
- DSP-6-LP
- Diablo Microdetector
- Diablo low power loop detector
- Diablo Controls DSP-6LP vehicle detector
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
Is the DSP-6LP used with a standard driveway loop?
Yes. The DSP-6LP is intended for standard in-ground inductive loop detection when the loop condition and lead-in wiring are within the detector requirements.
Why is the DSP-6LP common on solar gate systems?
It is a low-power detector, so it is often selected for solar or battery-supported gate operators where accessory current draw matters.
Can the DSP-6LP be used as a safety loop detector?
Do not assume that. This model is commonly listed as fail-secure, so safety-loop use must be verified against the gate operator manual and the required entrapment-protection design.
What should be checked before replacing an old detector with DSP-6LP?
Confirm the available voltage, relay contact wiring, loop resistance, loop inductance, and whether the original detector was fail-safe or fail-secure.
Does the DSP-6LP replace every Diablo loop detector?
No. It is related to other Diablo microdetectors, but connector style, power, fail behavior, and output type must match the application.
