LoRa series modules (Ra - 01 / Ra - 02) by essence can design and development of science and technology, this series of moduletheRf chip SX1278 mainly adopts LoRa remote modems, used for long distance spread spectrum communicationThe letter,Resistance toInterfere with strong sex, can maximum limit reduce current consumption.With LoRa are designedThe modulationTechnology, with more than 148 DBM SX1278 high sensitivity, + 20 DBM power outputthe transport distanceFrom far and high reliability.At the same time, relative to the traditional modulation technology, LoRa modulation technology in the fightBlocking and chooseAlso has obvious advantage, solve the traditional design scheme can't both distance,Anti-interference and power consumptionThe problem.Ra, the Ra - 01-02 working frequency 433 m, mainly aimed at 433 mSegment of the region, includingChina and southeast Asia.The module features:LoRa spread spectrum modulation techniqueVast communication distance 15 km+ 20 DBM - 100 mw constant rf power output voltage changeHigh sensitivity, low - 148 DBMHalf duplex SPI communicationProgrammable bit rate is as high as 300 KBPSSupport for , GFSK, MSK, GMSK, LoRa and modulation mode127 db RSSI dynamic rangeRf signal detection, automatic CAD model and super-fast AFCPacket engine with , up to 256 bytesSmall size double row stamp hole patch encapsulationWith shielding shellSpring antenna (Ra - 01) or external antenna (Ra - 02)(Different batches may have different printed characters, but it does not affect the use)Color: As ShownMaterial: PCBPackage Contents:1 * ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.