RKD-GSM-3DBI-RDANTENNA Electrical Specification Frequency Range -MHz 800MHz-960MHz,1880MHz-1930MHz VSWR 2.0 Gain-dBi 3 Polarization Vertical Impedance 50 Max. Power-W 50 Mechanical Specification Connector SMA-Plug Dimension-mm 10.551 Net Weight-g 9 Radome material Plastic Operation Temperature- -40~+60 Humidity-% 5~95 IP65 Solid protection & water protection Description ApplytoGSM900/GSM1800 terminal equipment and GPRS wireless transmission.