CarDefender is the best choice by DESIGN!
The methodology that a car alarm operates on is backwards. It attempts to disable your vehicle when it believes there has been an unauthorized entry. So when the power is cut the alarm goes to sleep. Goodbye alarm system! CarDefender is NOT a car alarm!
CarDefender, on the other hand does the opposite. After proper installation your car will be immobilized at all times when you are not operating it. CarDefender will only enable your car when you tell it to. If someone cuts the power to CarDefender it will NOT go away. Your vehicle will NOT Run.
Since a car alarm is not needed to run your vehicle, a thief may defeat it easily. Methods include cutting wires, shorting out the circuit that powers it, stun guns and even just ripping the entire car alarm control box out! (just to name a few) This can NOT happen with CarDefender.
With CarDefender, if any or all the wires are cut or the entire controller is removed, your vehicle will NOT Run.
CarDefender is built to ISO 9001:2008 Standards.