Dimensions 250x200x135 mm (LxWxH) Display 4.3” High-resolution graphical TFT display 480 x 272 Pixel Weight 900g Color Black Power over Ethernet class IEEE 802.3af, class 3 Freely programmable keys 12 programmable function keys with dual color LEDs Total amount of physical keys 51 Interfaces Network connection 2-port Gigabit Ethernet switch (RJ45) Wireless technologies Support for USB WLAN stick Built-in Bluetooth compatibility USB 1 x USB 2.0 host port, Type A Power supply PoE or 5V DC power adapter Headset support 4P4C connector, USB support for snom EHS Advanced Environmental Conditions Temperature Ambient: 0°C to 35°C (32°F to 95°F) Storage: -10°C to 45°C (14°F to 113°F) Humidity 5% to 95% (non-condensing) Homologation Type approval CE Safety IEC 60950