Siemens 6AV3505-1FB01 OP 5 Operator Panel Display

Siemens 6AV3505-1FB01 OP 5/A1 Operator Panel is a compact, monochrome HMI module featuring a 4-line by 20-character LCD display designed as the local operator interface for SIMATIC controllers. It runs on 24 V DC and provides a single serial interface (TTY/V.24) for communication with the host PLC. The panel measures 120 x 168 x 48 mm and weighs 800 g, and it includes six function keys for quick actions. Identified as OP 5/A1, it belongs to the OP5 family of operator panels; Siemens data sheets note it is discontinued and that OP7 is the recommended replacement for new designs. With its 4x20 display and keypad, this OP5 panel offers straightforward status display and input via the V.24 serial link for legacy installations that rely on direct local control.