WF Wi-Fi USB Dongle Supports YL AND PHONES T27G,T29G,T46G,T48G,T46S,T48S,T52S,T54S, WF Wi-Fi USB Dongle enables the SIP-T48G to be connected to wireless networks. This plug and play device is the ideal solution for businesses seeking to benefit from an affordable and reliable wireless connectivity. Features Supports Y/L SIP-T48G (upgrade to the version of 35.80.0.95 or higher) Reliable ConnectionEase-of-use Plug and Play High Transmission Rate Lower Power Consumption Specification Supports YL IP PHONE SIP-T48G (upgrade to the version of 35.80.0.95 or higher) Reliable Connection Ease-of-use Plug and Play High Transmission Rate Lower Power Consumption Specifications Network Standard: IEEE802.11b/g/n Transmission Rate: 150 Mbps Frequency Range: 2.4GHz Security: 64/128/152-bit WEP Encryption, WPA-PSK: WPA2-PSK Interface: USB2.0 L*W*H: 26.9mm*18mm*8mm Working Temperature: 0°C ~ +50°C ( 32°F ~ 122°F) Storage Temperature: -40°C ~+85°C (-40°F ~ 185°F)