Product Specification: Siemens HMI 6AV6641-0CA01-0AX1 OP-77B, Siemens HMI 6AV6641-0CA01-0AX1 OP-77B

• Display: 4.5-inch monochrome display
• Resolution: 320 x 240 pixels
• Communication Ports: RS-485 and RS-232 interfaces
• Memory: Typically 2MB
• Programming Software: Designed to work with Siemens programming software like WinCC Flexible

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