The Excalibur EXCAL500 Vehicle Alarm System with Immobilizer Mode and Keyless Entry sports plenty of features that warrant giving it a look. The siren and horn outputs allow you to find your car in a crowded parking lot and to alert passers-by to the danger you're facing. While these features are nice, the system is relatively expensive compared to other, more feature-rich alarm systems. Check out our best car alarm list to see these alarms!\r\n\r\nWhy We Like It - Excalibur EXCAL500+ Vehicle Alarm System with Immobilizer Mode and Keyless Entry\r\nThe Excalibur EXCAL500+ Vehicle Alarm System with Immobilizer Mode and Keyless Entry comes packaged with two, five-button remote controls to make operation of both your security system and your car a breeze. It\u2019s light, weighing just shy of two pounds, and has plenty of additional features to protect your vehicle and put your mind at ease.\r\n\r\nPerformance\r\nThe Excalibur EXCAL500+ Car Alarm comes with plenty of additional features. Such features include Vehicle Immobilizer Mode\/Starter Killer, a remote panic and easy valet mode to alert passers-by if you are in danger, and dual zone shock sensor. One thing it does seem to be missing is smartphone compatibility, which is a shame considering how every technological advancement seems to be going that way. Check out the CarLock 2nd Gen Advanced Real Time 3G Car Tracker if smartphone compatibility is a must for you.\r\nDesign\r\nExcalibur EXCAL500+ Vehicle Security System comes included with two, five-button remote controls that exceeds in getting the most out of both your security system and your car at the same time. It\u2019s on the light side too, weighing in at just shy of two pounds, making transporting it from vehicle to vehicle easy, and has siren and horn outputs if you need to find your car in a crowded parking lot. Check out the Viper 350 PLUS 3105V 1-Way Car Alarm for more similar features.\r\nValue\r\nThe Excalibur EXCAL500+ Vehicle Alarm System with Immobilizer Mode and Keyless Entry has a rating of 4.2\/5 stars over on Amazon. But considering this is based on only 9 customer reviews, it\u2019s hard to take seriously. And it\u2019s not like it\u2019s a newer product either. It was released in May of 2012. It is also relatively expensive compared to other car alarm systems, retailing for $44.00. Not terribly expensive, but not cheap either. Consider the Avital 3100LX Car Alarm if you\u2019re searching for something budget-friendly.\r\nExcalibur EXCAL500+ Vehicle Alarm System with Immobilizer Mode and Keyless Entry Wrap Up\r\nThe Excalibur EXCAL500+ Vehicle Alarm System with Immobilizer Mode and Keyless Entry boasts everything you want from a car alarm system. Starter killer and anti-carjacking features are among them. But it\u2019s hard to get over the lack of customer reviews. Why are so few people buying it? And why does it have no smartphone compatibility when all of technology is shifting that way now?