DEI Avital 3100L 1-Way Vehicle Security - All the security features you need in a basic security system - and more!. FEATURES:. Control your system with two 3-button Avital remotes with range up to 1 500 feet. Zone-2 Impact / Shock sensor. Fault-proof starter interrupt. Nuisance Prevention. Warn-Away (lower-level response). Six-Ton Revenger siren. Bitwriter programmable for easy configuration. Two 3-button remote controls. Keyless entry and AUX functions. D2D serial port for Xpresskits. Virtual Tach. Anti-Grind output (relay required).