Diablo Controls DSP-11-117 11-Pin Vehicle Loop Detector, 117 VAC
The DSP-11-117 is a line-voltage 11-pin loop detector designed to fit many traditional detector socket installations. It monitors the inductance of a saw-cut or preformed in-ground loop and changes its relay output when a vehicle is present. Because it is an 11-pin detector, it is commonly found in parking equipment cabinets, drive-through controls, access-control panels, and some gate operator control boxes that were wired around a socket-mounted detector. Correct replacement depends heavily on voltage and pinout. A detector with the same case style may not be correct if the original model was low voltage, 230 VAC, fail-secure, or had different output behavior. Always check the socket wiring and the old detector label before replacing the unit.
Compatible With
- Select 11-pin detector socket installations using 117 VAC control power
- Parking access equipment, drive-through systems, gate operator control boxes, and access-control panels with industry-style 11-pin detector bases
- Standard in-ground inductive loops in the supported inductance range
- Applications originally using Diablo DSP-11-117 or a compatible 117 VAC 11-pin relay-output detector
- Replacement work where the socket wiring, voltage, and output contacts match the original detector
Features and Specifications
| Manufacturer | Diablo Controls |
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| Product Type | 11-pin vehicle loop detector |
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| Part Number | DSP-11-117 |
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| Application | Vehicle detection for parking, gate, access-control, and drive-through systems |
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| Compatible Operator Type | Equipment with compatible 11-pin detector socket |
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| Voltage | 117 VAC |
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| Connector | Industry-style 11-pin plug/socket |
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| Loop Type | Standard in-ground inductive loop |
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| Notes | Do not substitute for LV or 230 VAC versions without confirming wiring |
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Also Known As / Related Part Numbers
- DSP-11-117
- DSP11-117
- DSP 11 117
- DSP-11 Series
- DSP-11-LV
- DSP-11-230
- Diablo 11-pin vehicle detector
- 117 VAC loop 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.
Product Questions and Answers
What does the 117 in DSP-11-117 mean?
It identifies the 117 VAC version of the DSP-11 detector family. The voltage must match the control power at the detector socket.
Is this detector interchangeable with DSP-11-LV?
No. DSP-11-LV is the low-voltage version, while DSP-11-117 is for 117 VAC socket applications.
Where is an 11-pin detector commonly used?
It is common in parking control cabinets, drive-through equipment, access-control panels, and gate operators that use a socket-mounted loop detector.
Can I install this if the old detector was 230 VAC?
No. Use the correct voltage version and confirm the socket wiring before replacing a line-voltage detector.
What should be checked if the replacement detector still shows a loop fault?
Check loop resistance, loop inductance, socket wiring, water in conduit, damaged lead-in cable, and the condition of the loop before replacing more parts.
