Car GSM Alarm SP800E Features SP800E--GSM 900/1800MHz SP800EA--GSM 850/1900MHz GSM car phone carried All functions of car alarm Built-in high capacity backup NiH battery Designable friendly languages instruction Check the status by phone Voice to arm or disarm Call up 3 phone numbers once triggered Instant call once illegally triggerred Monitor by microphone Shout by speaker Cut-off power to stop a car by phone Press-a-button to auto call for emergency help