Features:
1) Detection range: 0.3 - 2.19m behind the car
2) Power voltage: 10V-15V DC
3) Alarm volume: >78dB
4) Operative temperature: -40-80oC
5) The system will automatically detect obstacles behind the car
when in reverse gear
6) Accurately senses obstacles via 60 degrees "cone of detection"
from each sensor
7) The buzzer has three different tone levels to warn of object
proximity
8) Various sensor colors such as black, grey, blue, red, green, and
white are available
9) 2 - 8 sensors are available
10) LED, LCD, TFT LCD display options
11) Full DIY instruction makes system easy to install

Inner packing:
1 set/gift box
Box dimensions: 23 x 17 x 4cm

Outer packing: 20 sets/carton