Feature:1. For LoRa antenna that can be used indoor and outdoor, industrial design, durable Radome fiberglass, excellent waterproof and high temperature resistance.2. Compatible with HNT RAK Helium Hotspot Miner V2 V1 Bobcat Miner 300 syncrob is Dragino LPS8 MatchX M2 Pro Longfi LoRaWAN3. If it is used outdoors, we recommend that you install it in an open place, if it is used indoors, we recommend that you place it near a window. If there is no signal change when using this antenna for the first time, please turn off the power of the device, then plug in the antenna, and then turn on the power again. Applications include:Low data rate communication networks, long distance LoRa nodes, IoT and M2M nodes, industrial and environmental monitoring, smart metering applications, inventory tracking, data vending machine and monitoring, LoRaWAN, multi-point and NLOS applications, helium hotspot HNT mining miner, wireless video and security systemsSpecification:Frequency: 860-930MHz(US915,EU868)Feature: fixed wall mountAntenna: omnidirectionalRated gain: 3dbiMaximum Gain: 5.8dbi Antenna Height: 32cm Antenna Connector: NImpedance Female Connector: 50 Ohm Operating Temperature: -20°С - +80° С Storage Temperature: -30° С - +85° С List Package: 1 x 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.