SIPLUS S7-1500 DI 16X24VDC SRC -40 ... +70 GRAD C WITH CONFORMAL COATING BASED ON 6ES7521-1BH50-0AA0 . DIGITAL INPUT MODULE DI16 X DC24V, SOURCE, 16 CHANNELS IN GROUPS OF 16, INPUT DELAY 3.2MS, INPUT TYPE 3 (IEC 61131)