Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores. This is the Adafruit Feather M0 RFM95 LoRa Radio (433 MHz) - our take on an microcontroller with a 'Long Range (LoRa)' packet radio transceiver with built in USB and battery charging. Its an Adafruit Feather M0 with a 433MHz radio module cooked in! Great for making wireless networks that are more flexible than Bluetooth LE and without the high power requirements of WiFi. This is the 433 MHz radio version. We also sell a 898/915 MHz version of the same radio chipset! At the Feather M0's heart is an ATSAMD21G18 ARM Cortex M0 processor, clocked at 48 MHz and at 3.3V logic, the same one used in the new Arduino Zero. This chip has a whopping 256K of FLASH (8x more than the Atmega328 or 32u4) and 32K of RAM (16x as much)! This Feather M0 LoRa Radio uses the extra space left over to add an RFM9x LoRa 868/915 MHz radio module. These radios are not good for transmitting audio or video, but they do work quite well for small data packet transmission when you need more range than 2.4 GHz (BT, BLE, WiFi, ZigBee). SX1276 LoRa® based module with SPI interface Packet radio with ready-to-go Arduino libraries Uses the license-free ISM bands (ITU 'Europe' @ 433MHz and ITU 'Americas' @ 900MHz) +5 to +20 dBm up to 100 mW Power Output Capability (power output selectable in software) ~300uA during full sleep, ~120mA peak during +20dBm transmit, ~40mA during active radio listening. Simple wire antenna or spot for uFL connector Our initial tests with default library settings: over 1.2mi/2Km line-of-sight with wire quarter-wave antennas. (With setting tweaking and directional antennas, 20Km is possible).