EL4 Engineering Standards and Publications are designed to serve the public interest through
eliminating misunderstandings between manufacturers and purchasers, facilitating
interchangeability and improvement of products, and assisting the purchaser in selecting and
obtaining with minimum delay the proper product for his particular need. Existence of such
Standards and Publications shall not in any respect preclude any member or nonmember of EL4
fiom manufacturing or selling products not conforming to such Standards and Publications, nor
shall the existence of such Standards and Publications preclude their voluntary use by those other
than EIA members, whether the standard is to be used either domestically or internationally