Conventional

A system is considered “conventional” if its function, the technological means to implement its function, and its intended usage are all the same as, or closely similar to, that of previously approved systems that are commonly used. The systems that have established an adequate service history and the means of compliance for approval are generally accepted as "conventional." Normally conventional and simple systems may be analyzed by qualitative assessments and usually do not contain software or complex hardware that require compliance by detailed processes. See the definitions for complex and simple for more information.