... card 2.two way talking 3.no distance limit 4.open car door by phone or remote,very s GSM AUTO alarm ... example, it will have voice alert such as "door open", "shock alarm," "car start", "power cut" "emergency alarm" while you received ... remote alarm to preset telephone by voice10) Multiple triggering: Door open triggering, vibration triggering, power-off triggering,ignition triggering11) Panic button ...