12v Universal Car Security Power Window Closer

Our firm is producing and exporting of 12V Universal Car Security Power Window Closer to our consumer in Guangzhou, Guangdong, China, with the following details:
Not afraid to forget to close window!
Window closer
Working Voltage:DC12V plus or decrease 2V
Static Current:less than 5mA
Central lock and ACC trigger voltage:less than 9V
Single window max output current:less than 12V
Working temperature range:-40~80centigrade
1.Instructions:
After packing the car, press the remote control to lock the door(or use the key to lock the door), the window will close automatically and successively.
The order is:right front--right back--left back--left front
2.Use notice:
a.The product cana t recognize weather there are something in the area of the electric windows device or not.
b.The window will stop close when suffer resistance of outside.
c.When suffer resistance of outside there will exist some force.
d.When the key at ON location, the product dona t work.
3.Installation notice:
Please invite professional car electrician install this product, after installation, if the window is not close automatically after close the door 3 seconds later, please check with the following:
a.The key is at the ACC location or not.
b.The wire is connecting with the plug closely or not.
c.The trigger wire is installing correct or not.