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XpressKit 508D Double-Guard Proximity Sensor

Dual zone motion detector for Python® and Viper security systems

Item #: 607508D

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1 Review | 3 questions - 3 answers

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Get more out of your Python or Viper security system with XpressKit accessories. These handy add-ons let you incorporate luxury, security and convenience features into your vehicle.

The 508D Double-Guard proximity sensor triggers your alarm when a high-density object, like a hand or a tool, enters the cabin of your vehicle. You can set this sensitive dual-zone sensor to trigger a chirp when someone enters a warning zone just outside your vehicle, then to trigger a full alarm response when the second inner zone is violated. You'll enjoy an extra measure of protection when your alarm is armed.

Python recommends the 508D sensor to protect convertibles. You can set the sensor to chirp when somebody touches the top, and to trigger the alarm when somebody enters the vehicle with the top down. Warranty: 1 year.

XpressKit 508D Double-Guard Proximity Sensor Reviews

Average Customer Review:

1 Review

Motion sensor

Written by: Felix from Orocovis, PR on June 26, 2014

Crutchfield Customer Review (What's this?)

Very good ad on. Just plug and play. Good for people like me that has top off Jeep. Nobody can get close to your vehicle. First start giving away signal. If the person get closer it trigger the alarm.

Pros: Very handful and reliable.

Cons: Is a litle tricky to set up the sensor range but once you get it, nobody mess with your vehicle.

Hands-on research

What's in the box?

Download owner's manual

  • Dual zone motion sensor
  • 4-pin harness
  • Instructions card

Product Research


Overview: The 508D Dual Zone Motion Sensor used an ultra-high frequency field to detect objects of sufficient mass which move within a defined area. The 508D triggers the first stage output if an object is detected in the outer zone of coverage, while the second stage output is triggered if the inner zone is violated.

Dual Zone Protection: The 508D Dual Zone Motion Sensor protects the exterior and interior of your vehicle by establishing two security perimeters for your vehicle. If the exterior perimeter is violated, your security system will chirp toward away the potential intruder. A violation of the interior perimeter will trigger your alarm's full siren. This type of protection is ideal for convertible vehicles.

Sensitivity Adjustments: The 508D features adjustable sensitivity controls for both the interior and exterior zones to provide the necessary coverage for your type of vehicle.

Mounting: The 508D should be placed as close as possible to the center line of the vehicle. The unit's integrated mounting tabs should be to the front and the rear of the vehicle, but the orientation of the wire-socket end is not a factor. Also, the 508D is not sensitive to being placed directly onto metal

Wiring: The 508D comes supplied with a 4-pin harness which connects between the dual zone motion sensor module and your vehicle's alarm module.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Customer Q&A

3 questions already asked

If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: Or try our online support center: [ Kenny  Jan 09, 2016 ]  Staff
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy  Apr 01, 2015 ]  Staff
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question. [ Jeff  Feb 14, 2014 ]  Staff

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