Adafruit RFM69HCW Transceiver Radio Bonnet - 433 MHz

The latest Raspberry Pi computers feature WiFi and Bluetooth, but with Adafruit Radio Bonnets, you can integrate additional sub-GHz radio transceivers for long-distance communication. These bonnets enhance the Pi’s capabilities, offering seamless long-range wireless connections to remote battery-powered nodes or facilitating easy creation of Internet gateways.

The bonnets come equipped with a 128x32 OLED display for status updates and include three buttons for crafting a custom user interface or sending test messages. Supported by comprehensive Python libraries, they enable the sending and receiving of packetized radio data across a network, utilizing the Pi’s built-in networking capabilities.

Operating at 433 or 900 MHz, these modules offer a significant range advantage over the Pi's 2.4 GHz WiFi/Bluetooth radios. Although slower, they provide much farther-reaching communication without the need for pairing or connectivity setups. Simply send data to any module tuned to the same frequency and encryption key to receive and reply back.

Utilize these modules for creating sensor node networks or transmitting data across large areas, like campuses or towns. Available in four variants, the 433 MHz RFM69 model is known for easy usage and robust encryption, ensuring secure and efficient communication.

With the ability to transmit at +13 to +20 dBm, these radios can achieve line-of-sight distances of up to 500 meters using simple antennas, extendable to 5 km with optimal configurations. Integrate them seamlessly into your Raspberry Pi projects for enhanced connectivity and expanded capabilities.