Sitecom Wireless Network ASDL Modem Router 54g. Data transfer rate (max): 54 Mbit/s. Frequency band: 2.4 - 2.484 GHz. Data link protocols: IEEE 802.11g & IEEE 802.11b. Dimensions (WxDxH): 180 x 120 x 40 mm. Operating relative humidity range: 20 - 95 %, Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -20 - 70 °C