The EXCAL-500+ offers the latest in security and convenience technology. This feature-rich security/keyless entry system will deter even the most determined or sophisticated thief. Our state-of-the-art vehicle security platform offers unsurpassed vehicle protection that can only be offered by Excalibur's 30+ year legacy.Two 4 button transmitters included.Up to 2 aux outputs.Includes dual zone impact sensor.Coded override (99 possible combinations).Starter Interrupt included.Mini 2-in-1 Psyren included.Locks when triggered.Simultaneous horn honk and siren alert.ATV / Unauthorized Transmitter Alert.