The Allen-Bradley / Rockwell Automation 1756-IA16I is a 120V AC ControlLogix Digital Input Module. Operating voltage of 1756IA16I ranges from 74...132V AC, 50/60Hz. 1756-IA16I houses 16 individually isolated inputs. It has a total backplane power of 0.71W, off-state voltage max. of 20V, on-state current max. of 15mA @132V AC, 47...63Hz and inrush current max. of 250mA. Removable terminal block housing are the 1756-TBCH and 1756-TBS6H. Isolation voltage of 1756-ia16i is 125V (continuous).