Diablo Controls ITEM: DSP-11-LV


Diablo Controls ITEM: DSP-11-LV
Regular price $85.00
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  • We have 15+ years of industry experience
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DSP-11 Series, Vehicle Detector


  • Works on any in-ground inductive loop from 20 to 1500 microhenries.
  • Designed to be cross talk free between other loops
  • Automatically compensates for loop and lead-In sizes
  • Switchless, self-adapting to most common installations
  • Plug and play; Connect it up and watch it work
  • Small profile, perfect for many installations
  • Fail safe operation
  • Wide low-voltage operation
  • This series of Diablo Controls detectors are covered by United States Patent number US 7,132,959 “Non-Interfering Vehicle Detection.”
  • The DSP-11-LV is protected from damage if plugged into a higher voltage. No need to change a fuse or reset a circuit breaker, simply plug the detector into the proper voltage and it works.

Overview: Detector operates on any voltage from 10 to 30 volts AC or DC and draws about 35 milliamps of current with no vehicle on the loop. This micro-sized detector will automatically adjust its sensitivity level when used on different sized loops. The detector loop inductance should be between 20 and 2000 microhenries.

LED Indicators: The green Power LED blinks once per second to indicate the detector is operating and powered. The red Detect LED will turn on when a vehicle is over the loop detection area.

Loop or Wire Failures: In the case of a loop circuit failure, the green LED flashes slowly (twice per second) for an open loop circuit failure. The green LED will flash fast (10 times per second) to indicate a shorted loop circuit.

Fail Safe vs Fail Secure: A fail safe detector will output “detect” when the loop circuit is failed. This is always useful on a safety loop. On the free exit loop this will keep the gate open until the situation is fixed. This is useful in applications where it is important to allow traffic flow to continue. A fail secure detector will never output “detect” when the loop circuit is failed. This will keep the gate closed. This is useful in high-security areas or installations where containment is needed. The DSP-11 is a fail safe detector. Note: Never use a fail secure detector on a safety loop.

Output Relay Ratings: 1A at 125 VAC general use, 1A at 30 VDC

Power: DSP-11-LV (10 to 30 volts AC or DC), DSP-11-117 (117 volts AC), DSP-11-230 (230 volts AC)

Operating Temperature: -35° F to 165° F (-37° C to 74° C)

Size: Height: 1.4″ Width: 1.4″ Depth: 2.75″ overall

Connector: Standard 11-pin (Amphenol 86CP11)

Pin assignments are:

Pin 1 (black wire) – Power in (See model type)

Pin 2 (white wire) – Power in (See model type)

Pin 5 (yellow wire) – Output relay common

Pin 6 (blue wire) – Output relay N.O. – (closes for detect)

Pin 7 (gray twisted wire) – Loop input

Pin 8 (brown twisted wire) – Loop input

Pin 10 (pink wire*) – Output relay N.C. – (opens for detect)

*This wire is black (with white) on some harnesses.

  • DSP-11-LV = Low voltage model (10 to 30 volts AC or DC)
  • DSP-11-117 = 117 volts AC
  • DSP-11-230 = 230 volts AC

All in stock orders typically ship the same business days or within 1-2 business days.  Cut off for same day shipping is 2:30PM Central Time.


Items with lead times typically ship in 4-7 business days.


Orders with free shipping may have longer lead times due to those items being shipped the most economical way.  Free shipping on most orders over $195.00 does not include gate operators, loop sealant, and any extreme length or weight items

Our return policy lasts for only 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund. Some items such as Gate Operators or custom parts may not be returnable or carry a restocking fee if returned.

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Protec Controls accepts purchase orders please contact us.

NET 30

We also support Net 30 terms on our website for easy ordering. Please fill out the form to the right with your company information and we will get your account setup to place Net 30 orders.


Protec Controls accepts GSA SmartPay cards along with all major credit cards. For government quotes and purchase orders please email govsales@proteccontrols.com

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