... D1/Half-D1/CIF/QCIF > HDD storage, 2TB maximum > 2 channel, D1,Wireless Wireless 2 channel D1 Digital Video Server with Storage for surveillance ... CDMA, GPRS mobile network. supports 802.11b/g protocol, 2.4GHz, maximum wireless distance can be 100 meters, Supports WEP,WPA,WPA2( ... ) * 20Cm(W)* 4.8Cm(H) Net weight 1.82kg Wireless 2 channel D1 Digital Video Server with Storage for surveillance system