Check the listing for details. Xpresskit 509U Ultra Sonic Sensor. Condition: Open box. Listed at 63.99 USD. What's in the boxUltrasonic sensor control module 3-Pin to 4-Pin wiring harness 2 Ultrasonic transducers with attached 11.75' wire Wire tie 2 Mounting screws 2 Mounting bracket 2 Mounting plates Two-sided tape Installation Instructions About this itemWritten by Crutchfield's Gabrielle Thorndyke 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 509U ultrasonic sensor monitors the airspace inside your vehicle and is sophisticated enough to detect subtle window tampering, such as the slight change caused by pressure on a side window when a thief tries to "slim-jim" your doorlock. Youll enjoy an extra measure of protection when your alarm is armed. Warranty: 1 year