DESC: The Crime Guard 750i6 security system provides rock-solid security for peace of mind when you're away from your car. And, thanks to the included Echo-3 two-way remote control/pager, you'll enjoy instant alarm and vehicle status reports on an easy-to-read LCD display keychain. An audible or vibrating alert will let you know if your car alarm has been triggered, even when you're up to a quarter-mile from your car's location.