Nikon WT-7 Wireless Transmitter Nikon's WT-7/A/B/C Wireless Transmitter is aimed at professionals who need to transfer images more quickly than they can with built-in wireless LAN. When attached to the D500, it allows images & movie files to be transferred to computers* or FTP server via both wired & wireless LAN. The D500 with WT-7/A/B/C can be used as a wireless LAN access point, permitting easy connections with computers & smart devices. * Requires Wireless Transmitter Utility (available for download from Nikon website).