Special Features:

Engraved pushbutton reads track; housing marked with keying number; major components: engraved pushbutton 1, dripproff seal 1, rfi/emi shield 1, green filter 2, red filter 2

Properties:

Two or more different types of items having a common mounting or mounted on each other which together forms a portion of a switch but which in itself is not a complete functioning item and cannot be assigned a more definite item name. See also switch section, rotary and contact assembly, electrical.