The “A” SERIES connectors of Amphenol, which include the AT, ATP, ATP, ATM and AHD series are specifically designed for sectors in which equipment and heavy machinery are used such as Agriculture, Marine, Automotive, Military, Alternative Energy. They are high quality high performing products, at a competitive price, developed to be compatible with the other standard products in use on these markets. The three AT series differ in terms of current carrying capacity of the contacts; the AHD series is the circular version, dedicated to the management of the diagnostic part of the vehicle. Different options are available, such as the choice of colour of the plastic body or the integration of the led to signal voltage presence, to name a few.