Use a standard 5V, 2A USB power supply (not included). Most phone chargers meet this requirement.

You will likely have one of these lying around your house from a smartphone or another device.

1. Connect the USB-C end of the included cable to the AirGradient ONE
2. Connect the USB-A end to the USB power supply
3. Plug the power supply into an AC outlet

Power-related issues

If the device does not turn on, restarts unexpectedly, or shows unstable behavior (such as sudden CO2 spikes or missing PM data), the power supply is the most likely cause.

What to do

Try a different USB power adapter

Avoid low-quality or low-current chargers

Do not power the device from a computer USB port or underpowered hub

Stable power is critical for reliable operation.

Next steps

• Connect the AirGradient ONE to WiFi
• Return to AirGradient ONE: Setup and Overview