SIPLUS S7-300 FM350-1 -25...+60 ?C according to EN 50155 based on 6ES7350-1AH03-0AE0. Counter module FM 350-1 for S7-300, Counter functions up to 500 kHz 1 channel for connection of 5 V and 24 V incremental encoders "Isochronous mode; Measuring" range typ