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Description 2.4GHz 2dbi WiFi /Bluetooth Helical Brass Inner Antenna with IPX Connector Cable have better gains than pcb antenna and therefore can increase your WiFi range of ESP8266/ESP-07 modules. Applications As external antenna for ESP8266/ESP-07 WiFi modules IEEE 802.11b, 802.11g, 802.11n, Wi-Fi Antenna Antenna for XBEE, ZIGBEE, Bluetooth, Public Wireless Hotspots External antenna for NRF24L01 transceivers Technical Specifications Frequency range : 2.4GHz Impedance: 50 ohms Polarization: Omni direction Connector : IPX connector (Use U.FL as mating connector) Gain : 2 dBi Length: Antenna Length : ~5.8cm IPX Connector Cable length : 5.7cm Total Length (Antenna cable): ~11.8cm Weight: Total weight: 1.0gm Documents and Downloads A great article on WiFi Antenna fundamentals Package Includes 1x 2.4GHz 2dbi WiFi Helical Brass Inner Antenna with IPX Connector Cable