The Allen-Bradley 1769-L30ER-NSE is a CompactLogix controller designed for reliable mid-range control applications. It features dual Ethernet ports with Device Level Ring (DLR) support, providing robust network redundancy and simplified system integration. The controller includes 1 MB of user memory and supports up to 8 I/O expansion modules. It offers 16 Ethernet communication channels for efficient system connectivity and high-performance data exchange.

Unlike other models, the 1769-L30ER-NSE does not include a supercapacitor for real-time clock (RTC) backup. Each controller ships with a 1 GB Secure Digital (SD) card, expandable up to 2 GB for data and program storage. The unit incorporates an integrated CPU module, weighs approximately 2 lbs (0.9 kg), and measures 11 x 8 x 6 inches, making it compact yet powerful for diverse automation tasks.