The Siemens 6AV3515-1MA20-1AA0 OP15/C1 Operator Panel is designed for reliable control and efficient monitoring within industrial automation environments. This operator panel features a flexible display configuration, offering either a 4-line display with 20 characters per line or an 8-line display with 40 characters per line. The integrated interfaces include 2 x TTY/V.24 and 1 x RS422/485, providing versatile connectivity options for various industrial devices. With a 256 KB user memory and 8 programmable softkeys, the Siemens 6AV3515-1MA20-1AA0 allows for customized operations and user-friendly navigation. The robust construction ensures dependable performance in demanding settings. Please note: This product has been discontinued by Siemens. For new applications, Siemens recommends ordering the OP17 as an alternative. Brand: Siemens Flexible display options: 4-line/20 CPL or 8-line/40 CPL for adaptable visualization Multiple integrated interfaces (TTY/V.24 and RS422/485) enable broad compatibility 256 KB user memory supports complex control functions