SK-RPSB-S EchoMaster ParkAlert Backup Sensor Kit (Gloss Silver) 4 sensor ECU: 5-1/4 to 7 foot detection (Installer Programmable) 4 wide-angle sensors w/ locking connectors OEM-style wiring harness w/ protective cover Designed for all plastic bumpers Available in 4 color options (Matte Black, Gloss Black, White & Silver)