bids are invited for sapres for plc system 1 19 cpu 412-2 central processing unit with-work memory 1 mb , cpu 414-2 central processing unit with-work memory 2 mb , connection et 200m im 153-2 high feature , bus module for et 200m for holding 2 im153-2 red , bus module for et 200m for holding two 40 mm , connection plug , mounting rail for et 200m , memory card for s7-400 , rack ur2 , rack cr3 , backup battery 3.6 v-2.3 ah , power supply ps407-4 a , power supply ps407-10 a , psu100s 24 v-10 a stabilized power supply , psu100s 20 a stabilized power supply , psu8200 20 a stabilized power supply , position switch , digital signal processing board interface module total quantity : 27