Product details pictures Product Overview: Siemens 6AV6647-0AA11-3AX0 Parameter Specification Manufacturer Siemens Part Number 6AV6647-0AA11-3AX0 Product Name SIMATIC HMI KTP400 Basic Mono PN Display Type 4.0" Monochrome FSTN LCD (blue mode, LED backlight) Application & Fault Scenarios Common Uses: Local status display for small pumps and valves, parameter entry on packaging machines, alarm acknowledgment at remote field stations, simple setpoint adjustment for HVAC units.