The Allen-Bradley 1771-ICD is a robust PLC-5 system component, offering 20-60V DC input capability with 16 input channels, optimized for sink-type configurations. It efficiently handles a maximum 1.2 mA off-state current and requires a 250 mA backplane current load, ensuring reliability in complex industrial applications. This module is engineered for swift response, with signal delays of 6 ms when activated and 20 ms when deactivated, making it compatible with various source switching devices such as electro-mechanical transmitters and panel switches. Compatible with Series B 1771 I/O chassis, it integrates seamlessly within the system's infrastructure, utilizing a 1771 chassis power supply and ensuring performance longevity with proper installation and storage.