The Signal Type (1) defaults to the current product group and can be changed to meet user needs.

The remaining drop down boxes (2) represent the criteria used to filter products. One or more drop down boxes can be chosen. Each successive choice results in a finer selection of products.

After choosing the required filtering selections, clicking the submit button (3) will display the products as they relate to the choices—products not within the criteria chosen are displayed in gray.

Choosing to search through "All Signal Types" will present only those products that meet the criteria throughout all product groups. Products not meeting the chosen criteria will not be displayed.