1734-IB8| 8-point digital DC sinking input module Number of Inputs: 8 sinking inputs (NPN) Voltage Range: 10 to 28.8V DC (24V DC nominal) Input Current: 4 mA nominal (2–5 mA range) Input Filter Time: 0.5 ms hardware plus 0 to 63 ms user-selectable POINTBus Current: 75 mA @ 5V DC Power Dissipation: 1.6 W maximum Operating Temperature: -20°C to 55°C (-4°F to 131°F)