Included is the populated board, the male and female headers, so you can add the socket to your board if needed.
The optional resistors for the rare case you get noise are not included, as the value needed is not exact and varies depending on application.
Contact me beforehand if you have any concerns about this, and I will be happy to accommodate requests.
This board is to be plugged into your Speeduino or MegaSquirt ECU and will convert the AC signal from VR sensors to the required DC signal.
This is both physically and electrically compatible to the JBPERF v2.1 board.