Siemens 6GK5 101 LAN Connection Module 24 V dc, 125 x 40 x 124 mm. Interface: Ethernet. Module Type: Ethernet Communications Module. Length: 125mm. Width: 40mm. Depth: 124mm. Maximum Operating Temperature: +60°C. Minimum Operating Temperature: -10°C. MPN: 6GK5101-1BB00-2AA3