Model Number: NBB-904A Key Specifications/Special Features: *Connector: RP-SMA-K (internal threads and hole)*Support standards: IEEE802.11b/g/n*Frequency range: 2.4GHz-2.4835GHz*Voltage stationary Wave: 1.92Max*Impedance: 50 Ohms Nominal*Material: ABS material, anti-aging and anti-corrosion*Craft: anti-scrape, wear-resisting, top grade UV spray paint craft*SMC, TP-LINK, ASUS, Motorola, LINKSYS etc. RP-SMA-Jport (external threads and needle) wireless adapter/router products Item Specifications Antenna Frequency Range 2400~2500MHz Polarization Linear Gain（Zenith） GSM:2.0dBi WIFI:2.0dBi V.S.W.R ＜2.0 Impendence 50Ω Mechanical Cable RG174 Connector SMA or others Mounting Method Magnet Environmental Operating Temperature - 40℃~+85℃ Vibration 10 to 55Hz with 1.5mm amplitude 2hours Environmentally friendly ROHS Compliant