For ventilation and cooling setups, you can connect low-voltage DC fans to the SSR Add-on and let The Pill manage airflow automatically. Wire the fan to an SSR channel, pair the Pill with the Shelly Smart Control app, and choose when the fan should run - on a schedule or in response to temperature readings. This makes it easy to cool enclosures, refresh air in small spaces, or maintain stable conditions in equipment cabinets. The SSR ensures smooth, silent fan switching.