The Avital(R) 5108L Remote Start and Security System combines security with remote start to give you peace of mind, knowing your vehicle and its contents are protected from thieves and vandals - as well as the elements! This system includes two 1-way, 4-button remotes, siren, impact sensor, remote keyless entry, and more. Please note this product is intended for installation by a professional installer only! Attempts to install this product by a person other than a trained professional may result in severe damage to a vehicle's electrical system and components.