ITEM NAME:315MHz 3.5dBi WIFI SMA Male Transmitting And Receiving Antennas Description: 100% brand new & high quality. Simply Replace Current Antenna to Increase Signal Strength, Extend Wireless Range to Dead Spot Durable,easy to install. Small, lightweight. Specification: Band (MHz)ï ¼Å¡315 The gain (dBi)ï ¼Å¡1-3.5 Standing wave ratioï ¼Å¡1.5 Input impedance (Ohm)ï ¼Å¡50 Antenna connector product name:SMA - J The corresponding connector product name:SMA - K Polarization mode:Vertical polarization Large input power (W):20 Material:Plastic+metal Size:105mm Package Includes: 1 PiecexAntenna SKU: DMO0011808063003378.Input impedance (Ohm)ï ¼Å¡50. SKU: DMO0011808063003378. 1 PiecexAntenna. Large input power (W):20.