Feature:
Rate voltage: 12V for DC
Rate operating range: 10.5V - 16V for DC
Rate current: 100mA - 300mA
Detecting distance: 0.3 - 2.0m
Ultrasonic frequency: 40KHz
Control moudle working temperature: -30 - 80 celcius degree
Display working temperature: -20 - 70 celcius degree
Indicator size: 4.1 1.6cm
Sensor size: 1.9 2.5cm (H D)
Main control bo size:5.9 8.9 2.5cm
Weight: 316g

Specifications:
4 sensor system, double CPU and advanced chipset for enhanced coverage and detection (0-2.5m).
High sensitivity.
With sound alert when the 4 cameras detect dangers.
The closer the obstacles, the louder and faster the sound alert.
Help to prevent dangerous and costly collisions.
Help to provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle.
Detect small children and low walls as well.
Anti-freeze and rain proof.
Easy to install.
A saw drill head included.
The buzzer sounds in different frequency according to different distances. Details shown in the following:
RangeDistance Alarm
1 1.6m~2.0m Mute
2 1.0m~1.5m Bi------Bi------
3 0.6m~0.9m Bi---Bi---Bi---
4 0.1m~0.3 m BiBiBiBiBi--

Package included:
1 Main Control Bo
1 Sound Alert Indicator
4 Parking Sensors
1 Hole Saw
1 Power Cable
2 Double Side Sticker