KTC8050S-C-RTK/P KTC8050SD KTC8050S-D KTC8050S-D-RTK KTC8050S-D-RTK/P KTC8050S-D-RTK/R KTC8050S-D-RTK-P KTC8050S-D-RTP KTC8050S-RTK/P KTC8050-Y-RTK