This Parking Asisst System(PAS) comes with 4 sensors and a display with built-in buzzer that is an ultrasonic detects the area behind the vehicle while reversing, and alerts with audible tones and visual display, if the system detects an obstacle.
If the display comes with the digital numbers, the system will accurately show the distance to the obstacle. The display is suitable for dash, interior mirror or rear roof mounting. When the display is mounted on the rear roof, it can be easily viewed from the interior mirror.

Features:
This parking assist system comes with 4 sensors and a display with built-in buzzer.
Can be used as a 2-sensor system.
Dual intelligent function together with learning function for vehicle with tow-bar, spare wheel or other protrusions.
Precise detection range.
Self-testing function.
Anti-false alert technology.
All weather design.

Specifications:
Brand: Steelmate
Model: PTS410M7
Input voltage: 12V DC
Operating power: !#!lt!*!2.5W
Operating temperature: -40℃~+80℃
Detection range: 0.1-2.5m / 0.3-8.2ft
Buzzer alarm range: 0.1-1.5m / 1.0-4.9ft
Buzzer SPL: L: 80±10dB M: 90±10dB
Package size: 16.5 * 16.5 * 10cm / 6.5 * 6.5 * 3.9in
Package weight: 676g / 23.8oz

Package List:
1 * ECU
1 * Display
4 * Sensor
4 * Sensor Wire
1 * Power Harness
1 * Set of Installation Accessory
1 * User Manual
1 * Installation Guide