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The Allen-Bradley 1771-LC1B loop controller is engineered for robust performance in automation environments, featuring a 120 Volts AC rated design that mounts directly to a rack. Encased in a conformally coated enclosure, it withstands harsh conditions, while a built-in LCD display with configurable keys facilitates control, offering alphanumeric and graphical data along with real-time status indicators. Operating efficiently with a backplane current of 750 milliamps, this controller integrates seamlessly with PLC 5 systems via an extended local I/O link, ensuring rapid, high-speed data transfers, and reliable arithmetic processing with a loop update time of 100 milliseconds, making it ideal for industrial applications with environmental temperatures ranging from 5 to 50 degrees Celsius.