Spektrum X-Plus8 Expansion Module SPMXP8000Spektrum X Plus8 Expansion Module SPMXP8000 Spektrum X Plus technology is perfect for scale modellers who want the option to expand a models functions without having to buy a new receiver when they do. With the X Plus module you can instantly add eight extra channels to any Spektrum DSMX receiver with X Plus technology. Just plug it into the receivers SRXL port. A DSMX transmitter with X Plus software is required to assign the extra functions to