guyz,
Which alarm i should get if i want one like (when i use my key to lock my car n it can helps me to close the windows if i forget to close it??)

 

Purchase an alarm made by Directed Electronics. Viper, Clifford, Python, Avital or Automate are your choices. With any of the said alarm systems, a separate glass sensor will have to be purchased. A glass sensor will usually run 20 to 30 dollars plus installation. I usually flush mount them on the drivers side piller. It looks clean and it gets a great response. Good luck!