Specification Note : sma inner hole Gain: 5.8dBi Frequency Range: 868MHZ VSWR: < 1.8 Polarization: Linear Vertical Impedance: 50 ohm Direction: Omni-directional Feature: Magnet Base Antenna Connector: RP-SMA Male Connector Cable Length: 3meter/10 feet RG58 cable Waterproof: IP67 Operating Temperature: -20 ~ +80 Storage Temperature: -30 ~ +85 Feature: 1.If it is used outdoors, we recommend that you install it in an open place, if it is used indoors, we recommend placing this inside near a window. 2.If there is no change in the signal when using this antenna for the first time, please turn off the power of your device, then plug in the antenna,and then turn on the power again. 3.Applications Include: Low Data Rate Communication Networks, Long Distance LoRa Nodes, IoT & M2M Nodes, Industrial & Environmental Monitoring, Smart Metering Applications,LoRaWAN, Multipoint and NLOS Applications, RAK V1 V2 Nebra Bobcat EasyLinkIn SenseCAP M1 & SyncroB. it Helium Hotspot HNT Miner Mining etc.(915MHZ versions only 4.The main body of the antenna is made of pure copper material, which has more excellent gain performance Tips: Please allow 1-3cm error of measurement. Photo color might be a little different from the actual product due to color display of different monitors. Product Includes: 1 x Antenna 1X RP-SMA Female to SMA Male Adapter (As the Picture Shown)