Wow those alarms are really affordable. But will you be able to hear it when your inside the mall or your 4km or 5km away from your car or a burglar who knows how to disarmmed car alarm system. The goodnews is were coming out with a high tech anti-theft /anti-carnapped/anti-carjocker that sends signal through wireless technology. So when you say wireless technology there is no limitation when it comes to distance. You will be able to stop your car at any distance remotely. You will be able to locate your car, you will be able to see who's the culprit, will send an alarm to inform you there is an intruder inside your car though you are inside the mall in a meeting or somewhere very far from your car. More info coming, watch for this.