Car Alarm Remote Start Starter Keyless Entry Ht800d car alarm + remote engine starter + keyless entry :With advanced ASK technology, high-sensitivity and anti-jammin Compact remote control Dual-stage shock sensing, reduce false alarm. Emergency alarm :If any of the doors, hood or trunk is open while the alarm is armed, the siren will sound for 25 sec, Car finder. Remote trunk release. Anti-hijacking. Automatic door lock/unlock.