This model with a specail accessory: Power window, the power window is inside the car alarm system, so when you arm the car, the window will rise automatically, and it also with many function 1. Atuo -closed 4 windows when arming 2. Remote arming/disarming 3. Silent arming 4. Auto re-arming 5. Automatic environment recogniton 6. Triggering alarming memory 7. Side door alert 8. Auto central door lock 9. Power disconnection memory 10. Car finding by sound and light or mute mode 11. Panic 12. Remote sensor bypass 13. Anti-hijacking 14. Car reversing reminder 15. Remote anti-hijacking 16. Remote program 17. LED status indicator 18. Trunk release 19. Light separately supply-power protect Coding: Learning code Votage: 12VCD+-3V Static current: <10mA Indicator current: <10mA Shock sensor current: <5mA Frequency: 315/433MHZ