Adafruit (PID 3072 RFM95W LoRa Radio Transceiver Breakout – 868 or 915 MHz

Sending data over long distances is like magic, and now You’ll be a magician with this range of powerful and easy-to-use radio modules. Most WiFi, Bluetooth, Zigbee and other wireless chipsets use 2.4GHz, which is great for high speed transfers. If you are not so concerned about streaming a video, You’ll use a lower license-free frequency such as 433 or 900 MHz. You’ll’t send data as fast but You’ll send data a lot farther.’

The modules do packetization, error correction and can also auto-retransmit so its not like you have worry about everything but less power is wasted on maintaining a link or pairing.

These modules are great for use with Arduinos or other microcontrollers, say if you want a sensor node nework or transmit data over a campus or town. The trade off is you want two or more radios, with matching frequencies.

This is the 900 MHz radio version, which can be used for either 868MHz or 915MHz transmission/reception – the exact radio frequency is decided when you load the software since it may be tuned around dynamically. These are +20dBm LoRa packet radios that have a special radio modulation that is not compatible with the RFM69s but can go much much farther. They are able to easily go 2 Km line of sight the use of simple wire antennas, or up to 20Km with directional antennas and settings tweaking

Range of approx. 2Km, depending on obstructions, frequency, antenna and power output

All radios are sold individually and can only talk to radios of the same part number. E.g. RFM69 900 MHz can only talk to RFM69 900 MHz, LoRa 433 MHz can only talk to LoRa 433, etc.

Each radio comes with some header, a 3.3V voltage regulator and levelshifter that can handle 3-5V DC power and logic so You’ll use it with 3V or 5V devices. It is very important cut and solder on a small piece of wire (any solid or stranded core is fine) with a purpose to create your antenna. Optionally You’ll pick up a uFL or SMA edge-mount connector and attach an external duck.

Make sure this fits by entering your model number.
New in 2020 – radio module comes with a protective tin to keep it a little safer from the elements
Packet radio with ready-to-go Arduino libraries
900 MHz radio version, used for 868MHz or 915MHz transmission/reception
Simpler than WiFi or BLE, you dont have to associate, pair, scan, or worry about connections