The Part Number is ZP-12-3xxxN.
This post explains for the semiconductor ZP-12-3xxxN.
The function of this semiconductor is Insert Configuration Listing.
Manufacturers : Star Line
Preview images :
The Pyle-Star-Line Insert Configuration Listing is issued primarily to identify various contact insert arrangements. The male insert illustration shown left (and those on the following pages) is shown as it appears when viewed from the front.
Other data sheets within the file :
ZP-12-310PN, ZP-12-310SN, ZP-C28-18P, ZP-C28-18S, ZP-C28-42P, ZP-C28-42S