The Argon is a powerful Wi-Fi enabled development kit that can act as either a standalone Wi-Fi endpoint or Wi-Fi enabled gateway for BLE nodes. It is based on the Nordic nRF52840 with the ESP32 and has built-in battery charging circuitry so it’s easy to connect a Li-Po and deploy your local network in minutes.
The Argon is great for connecting existing projects to the Particle Device Cloud or as a gateway to connect an entire group of local endpoints.
More information is available on the website of Particle.