The new Compustar CMX car security/remote start controller, which is capable of being configured as an alarm only, alarm with remote starter, or remote starter. It can be used as a stand-alone system (OEM remotes) or with an add-on Compustar remote kit. Choose Your Upgrades. The CMX supports all Firstech accessories for universal applications, such as ALARMIT for security and FTI T-Harnesses for remote start.