thats not true, an alarm is an alarm. where you purchase from might not be an authorized place so you wont get lifetime warrenty on the relay pack but tahts about it. its not like people actually check. If you can install one type of alarm, doing any is possible unless its s POS. and yes the one you can start your car, monitor through GSM can be found by GSM Mobile Car Alarm System, Audiovox, JBS technologies, Compustar Pro Computrack are some that are out there