12v Brain printed circuit board (RJ sockets) to suit SV3 – Version 2 control systems.
To identify your controller version, please check the serial number on the barcode sticker located on the top left hand side mains power cover plate.
Serial number format will be – SV3 1000 0002 3000 1234 (V2)
If there is no (V2) noted, please see alternate listing for Brain PCB (v1)