The Allen-Bradley / Rockwell Automation 1771-IVN 10...60V DC source (sink load) Input Signal Termination houses 32 (4 sets of 8) inputs. Operating voltage for 1771IVN is 10...30V. Backplane current load is 280mA and off-state current max. is 1.7mA. Wiring arm is the 1771-WN.