The 6AV3515-1EB00 is the Siemens OP15/A Operator Panel, part of the SIMATIC HMI series.
The 6AV3515-1EB00 is the Siemens OP15/A Operator Panel, part of the SIMATIC HMI series. It features a two-line LCD display with 40 characters per line and integrated interfaces, including 2x TTY/V.24 and 1x MPI/PPI/L2-DP. It has 256 KB of user memory and is designed for industrial automation applications. However, this product has been discontinued, and Siemens recommends the OP17 as a replacement.