| Manufacturer part number (MPN) | 6AV2124-2DC01-0AX0 |
| EAN / GTIN | 4025515078975 |
| Sales unit | pcs |
| Product type designation | KTP400 Comfort |
| Screen diagonal | 4.3 in |
| Display width | 95 mm |
| Display height | 53.8 mm |
| Number of colors | 16 777 216 |
| Resolution (pixels) — Horizontal image resolution | 480 pixel |
| Resolution (pixels) — Vertical image resolution | 272 pixel |
| Backlighting — MTBF backlighting (at 25 °C) | 80 000 h |
| Backlighting — Backlight dimmable | Yes; 0-100 % |
| Keyboard — Number of function keys | 4 |
| Keyboard — Number of function keys with LEDs | 4 |
| Touch operation — Direct keys (touch buttons as S7 input I/O) | 32 |
| Maximum permissible angle of inclination without external ventilation | 35° |
| Rated value (DC) | 24 V |
| Permissible range, lower limit (DC) | 19.2 V |
| Permissible range, upper limit (DC) | 28.8 V |
| Current consumption (rated value) | 0.13 A |
| Starting current inrush I²t | 0.5 A²·s |
| Active power input, typ. | 3.1 W |
| Memory available for user data | 4 Mbyte |
| Clock | Hardware clock (real-time), retentive, back-up duration typically 6 weeks |
| Number of industrial Ethernet interfaces | 1 |
| Number of RS 485 interfaces | 1; RS 422 / 485 combined |
| Number of RS 422 interfaces | 1 |
| Number of USB interfaces | 1; USB 2.0 |
| Number of SD card slots | 2 |
| IP (at the front) | IP65 |
| IP (rear) | IP20 |
| NEMA (front) | Enclosure Type 4 and Type 4x at the front |
| Use in hazardous areas | ATEX Zone 2, ATEX Zone 22, IECEx Zone 2, IECEx Zone 22, cULus Class I Zone 2 Division 2, FM Class I Division 2 |
| Ambient temperature during operation — For vertical installation, min. | 0 °C |
| Ambient temperature during operation — For vertical installation, max. | 50 °C |
| Ambient temperature during operation — At maximum tilt angle, max. | 40 °C |
| Ambient temperature during storage/transportation — min. | -20 °C |
| Ambient temperature during storage/transportation — max. | 60 °C |
| Relative humidity — Operation, max. | 90 %; no condensation |
| Configuration software | WinCC Comfort / Advanced / Professional (TIA Portal) from V11 |
| Number of online/runtime languages | 32 |
| Number of variables per device | 1 024 |
| Number of configurable images | 500 |
| Number of recipes | 100 |
| Size of internal recipe memory | 512 kbyte |
| Number of bit messages | 2 000 |
| Number of analog messages | 50 |
| Message buffer number of entries | 256 |
| Number of archives per device | 10 |
| Number of entries per archive | 10 000 |
| Number of users | 50 |
| SIMATIC HMI SD memory card | Yes; Up to 2 GB |
| Width of the housing front | 140 mm |
| Height of housing front | 116 mm |
| Mounting cutout, width | 124 mm |
| Mounting cutout, height | 100 mm |
| Mounting depth | 48 mm |
| Weight (without packaging) | 0.6 kg |
| Voltage type (supply voltage) | DC |
| Number of HW-interfaces industrial Ethernet | 1 |
| Number of interfaces PROFINET | 1 |
| Number of HW-interfaces RS-422 | 1 |
| Number of HW-interfaces RS-485 | 1 |
| Number of HW-interfaces USB | 1 |
| Type of display | TFT |
| Number of colours of the display | 16777216 |
| Number of pixels, horizontal | 480 |
| Number of pixels, vertical | 272 |
| Usable project memory/user memory | 4000 kByte |
| Number of function buttons, programmable | 4 |
| Number of buttons with LED | 4 |
| Touch technology | Resistive touch |
| With touch screen | Yes |
| Number of password levels | 50 |
| Number of online languages | 32 |
| Degree of protection (IP), front side | IP65 |
| Width of the front | 140 mm |
| Height of the front | 116 mm |
| Built-in depth | 49 mm |
| Country of origin | Germany |