Description The Omron NT21-ST121B-E is a compact human-machine interface designed for operator control and monitoring in industrial environments. It features a 5.2-inch monochrome touchscreen display with a resolution of 260 × 140 pixels for clear visualization of process data. This HMI operates on a 24 VDC power supply and is suited for space-constrained automation panels. Technical Specifications Condition New/Never Used Surplus Brand Omron Category HMI / MMI / OIT Part Number NT21-ST121B-E Subcategory Touchscreen Operator Interface Display Size 5.2 inches Display Type Monochrome LCD Display Resolution 260 × 140 pixels Input Method Touchscreen Supply Voltage 24 VDC Operating Temperature 0 to 50 °C Ingress Protection IP65 (front), NEMA 4 Case Color Black Mounting Type Panel mount Dimensions (W x H x D) 190 × 110 × 53.5 mm Compatible Systems Multiple manufacturers and products Information About NT21-ST121B-E The NT21-ST121B-E is an operator interface from Omron Automation developed for reliable human-machine interaction in industrial control systems. It is housed in a compact enclosure with an IP65-rated front panel, making it suitable for installation in environments exposed to dust and moisture. The unit integrates easily with a wide range of PLCs and control systems from multiple manufacturers, supporting flexible system architectures. It is commonly used in machine control, process monitoring, and basic automation applications where a simple, robust touchscreen interface is required. Key Features: Compact HMI design: Optimized for installations with limited panel space. Monochrome touchscreen display: Provides clear and reliable visual feedback. 5.2-inch screen size: Balances readability with space efficiency. Touchscreen input method: Enables direct and intuitive operator interaction. Industrial protection rating: IP65 front protection for harsh environments. 24 VDC power operation: Compatible with standard industrial power systems. Wide device compatibility: Designed for use with multiple manufacturers’ controllers. Panel-mount construction: Supports secure integration into control cabinets. Durable enclosure: Built for continuous operation in industrial conditions. The NT21-ST121B-E delivers the reliability and precision required for operator interface and monitoring in industrial automation systems.
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