Feature: Outdoor Antenna, LORA Antenna Outdoor Omnidirectional LTE Fiberglass Antenna Long for Fresh Air-Receiving AntennaThe antenna has an n-male connector, so it can be easily connected to the gateway and all other helium miners. The antenna can be used in any environment that requires LoRa long-distance connection, for agriculture, environmental monitoring and urban monitoringSpecification:Brand: STARFConnage: n-maleFrequency: 860-930MHz (eu 868MHz, usa 915MHz)Polarization: vertical polarizationGain: 4-7DBIstanding wave ratio: ge; 1.3 (dB) Impedance: 50 ohm Material: Fiberglass Connector Material: Copper Working Temperature: -40 - +85 Celsius Length: 250mm/320mm/420mm/550mm (Optional) Relative Humidity: Up to 95% Packing List: 1 * AntennaNote: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Manual measurement, please allow 1-10mm error. Thank you for your understanding.