Garage
Shop

Directed 509U

Ultrasonic Sensor for Security Systems (DEI Install Essentials 509U)

Directed
Shop all Directed
Only 3 Left!
Product videos
highlight-star-icon

• Ultrasonic Sensor for Security Systems
• Detects air pressure changes in the cabin of the vehicle
• Detect thieves entering vehicle without glass breakage
• Adds extra protection when used in conjunction with other security systems

Learn more about the dei-509u
Was $94.99 Details
Thanks , You Pay:

$29.00

 with warranty

Heads up

We confirm fitment and offer accessories for speakers. Please set your vehicle first if you would like to purchase more than one dei-509u.

Set your vehicle or Return to product page
shipping truck icon Free shipping in USA. Provide zip for delivery date.
Quantity
In Stock. Only 3 Left!
Brand new

Buy it now


Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Hassle-free immediate replacement within minutes!
  • Easy online claims 24/7
  • Covers product breakdowns and failures
Swoosh Icon Icon of Swoosh

For over 24 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts

Product Highlights


• Ultrasonic Sensor for Security Systems
• Detects air pressure changes in the cabin of the vehicle
• Detect thieves entering vehicle without glass breakage
• Adds extra protection when used in conjunction with other security systems

Description


  • Ultrasonic Sensor for Security Systems
  • Detects air pressure changes in the cabin of the vehicle
  • Adds extra protection when used in conjunction with other security systems
  • Detect thieves entering vehicle without glass breakage
  • Effective only when all entrances are secured and closed (doors, windows, and sunroof)
  • NOT RECOMMENDED FOR CONVERTIBLE VEHICLES
  • Dimensions: 4.5"L x 5.3"W x 2"H
  • 1-year SonicElectronix.com warranty

Best selling similar products

Directed 508D

• Invisibeam® Field Disturbance Sensor
• Generates two invisible detection fields around your vehicle
• Offers 2 response types

(14)

$45.99

List price $94.99

Directed 504D

• Stinger DoubleGuard Shock Sensor
• Adjustable Sensitivity
• Wire Harness Included

(3)

$19.99

List price $31.99

Axxess AX-TRIG1

•Universal bypass module for aftermarket stereos
• Emulates a parking brake signal
•ntended for use in RVs, off-road vehicles and exhibition vehicles: Other applications are illegal

(16)

$21.99

List price $24.99

Directed 506T

• Audio Sensor That Detects Attempts to Tamper with or Break Your Vehicle's Glass

(19)

$18.99

List price $41.99

Omega AU-46 (Bag of 5)

• Mercury Tilt Switch
• Detects Open Zones
• Waterproof Design
• Adjustable Angle

(3)

$23.99

List price $23.99

Viper 5308V

• 2-Way 5-Button Remote Car Starter
• With 4-Button Transmitter
• 1320 feet Range
• Antenna With Integrated Valet Switch & LED
• Built-in security features

$329.99

List price $349.99

PAC TR-4

• Remote Turn-On Module
• Used To Turn On Remote Amplifiers
• 2 Second Delay To Prevent Turn-On Noise
• Supplies 2 Amps Of Current
• Can Drive Multiple Amps Or A Power Antenna
• Activated By Low Level Trigger Lead

(15)

$16.99

List price $26.00

Omega AU-94TM

• Dual Zone Proximity Sensor
• Dual zone sensing
• Protects both inside and outside of the vehicle
• Each zone is independently adjustable
• LED sensitivity test light
• Pre-wired 4-pin plug allows easy connection to all Omega systems

(11)

$35.99

List price $73.99

Avital 3100LX

• Clone-Safe® Code-Hopping®
• Parking Light Flash
• Bright Blue LED Status Indicator
• Optional Dome Light Supervision (separate relay required)

(2)

$45.99

List price $129.99

Directed 610T

• Automotive 40/30 Ampere Relay

$7.99

List price $14.99

Item Details


Manufacturer:

Model Number:

509U

Weight:

0.50lbs

Internal SKU:

dei-509u

Internal Product ID:

13985

Product and How-to Videos


Customer Ratings & Reviews



5 star
50%
4 star
50%
3 star
0%
2 star
0%
1 star
0%



Durability
4.5
Value
4
Features
4.5
Design
4.5
Usability
5

Customer Reviews

Sort by:

Loading...

This is a great sensor if you have a Air tight car

This is a great sensor if you have a Air tight car I have this sensor in my mini van with the 2 sensors over my 2 front pillar I have them set at max and have no problem with them as long as all windows are closed tight no Air flow in the car I have test this sensor in every way I have open my driver window and set the alarm and it will not last a min and the alarm is set off I have put a stuff doll on my dash and set the alarm with all windows closed and rock the car to the doll drop off the dash and set off the ultrasonic sensor this sensor is 100% I have set the alarm and open a back lift gate and the ultrasonic sensor was set off I even open the back vent window 3 out of 5 times the sensor will see the air flow from the vent.

By mike on March 22, 2011

46

found this helpful.

Works really well

Would definitely buy another, really easy to install.

By Ivan on March 13, 2012

41

found this helpful.

Related Searches


Save up to 10 different vehicles in your garage

Add vehicle
Loading...
Identify your vehicle and submodel details
  • Owner’s manual
  • Vehicle’s insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver’s side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon