Features 1、WATERPROOF AND DURABLE: Adopt good quality materials, non toxic and harmless, durable with strong signal, waterproof and sun proof 2、PORTABLE AND HIGH GAIN: Small size is easy to carry and install, completely free from space constraints. High signal durable antenna has high gain, the larger the range, the farther the distance 3、WEAR AND CORROSION RESISTANT INTERFACE: The interface is SMA male, wear resistant, corrosion resistant and durable, very practical 4、BETTER TRANSMISSION: Independent channel bring faster transmission, reduce co channel interference, strengthen signal gain effect, and improve transmission performance 5、WIDE RANGE OF APPLICATIONS: Can be used for GSM, 2G, 3G, wireless modules, for NB-IOT modules, for DTU modules, advertising machines, numbering machines, vending machines, GPRS signal reception or transmission, etc. Specification Item Type: Omnidirectional Antenna Model: JB-GSM-020 Material: ABS Purpose: Signal transmission and gain Working Frequency: 824-960 1710-2170mhz Antenna Gain: 3DBI Impedance: 50Ω Maximum Power: 50W Standing Wave Ratio: ≤1.5 Polarization Method: Vertical polarization Antenna Connector: SMA male Application Field: Can be used for GSM, 2G, 3G, wireless modules, for NB-IOT modules, for DTU modules, advertising machines, numbering machines, vending machines, GPRS signal reception or transmission, etc. Package List 5 x Omnidirectional Antenna