Siemens SIMATIC NET SCALANCE W774-1 RJ-45 Operating Instructions Manual page 41

Technical specifications
Mean time between failure (MTBF)
* The PoE class depends on the hardware version of the device. Devices with a hardware
)
version ≥ 3 have PoE class 2. Devices with a lower hardware version have PoE class 3.
SCALANCE W774-1/W734-1
Operating Instructions, 09/2015, C79000-G8976-C325-06
at 40 °C ambient temperature
6.1 Technical specifications W774/W734 RJ-45
61.85 years
Technical data
41