Allen-Bradley 1756-IB16S 10-30 VDC Safety Input 16 Pts (36 Pin)
On-state voltage range:10...32V DC
On-state current, @ on-state min voltage:2.4 mA @ 10V
On-state current, @ on-state nom voltage:2.5 mA @ 24V
On-state current, @ on-state max voltage:2.8 mA @ 32V
Off-state voltage, max:5V DC
