The advantage of our   Parking Sensor system : 

---Automatically engages as soon as you place your car into reverse.
---Super mini display
---Alarm with LED display
---Embeded "bi.bi." buzzer and Left/Right tri-color lamp
---2~8 pieces different color sensors is available
---Easy installation
---Power(DC): +9~+16 V
---Operation temperature available: -35~+75 degree
--- Human Speaking Warning is optional
--- Wireless Parking System is optional  

If there is any question ,pls feel free contact us via msn /mail  helioshid at hotmail dot com , thank you !