auto vehicle car alarm keyless entry AL802 1. Power window output + Keyless entry feature. 2.Ultrasonic sensor (optional) input 3.Positive and negative door trigger 4. Audible alarm trigger in silent arming mode (when there is unauthorized door opening) 5. Remote select auto arming or not 6. Remote select opening door with light flashing or without it 7. Remote select locking door with footbrake pushing or without it 8. 120dB siren with six different tones 9.Code learning (four remotes maximum)