The Allen-Bradley 1753-L28BBBM is a robust safety controller from the GuardPLC 1600 series, engineered for precision with 28 I/O points, including 20 non-isolated inputs and 8 non-isolated outputs. This device ensures reliable safety operations by monitoring for faults and switching affected inputs and outputs to a safe "off" state, leveraging the Modbus communication protocol for seamless integration with other systems. With 250 KB of both user program and application data memory, the controller operates on a 24 Volt DC power supply and can handle up to 8 Amps, featuring IP20-rated housing, four RJ45 Ethernet connectors, and compact dimensions of 257 x 114 x 66 millimeters.