Using this app, you can control your Dyson fan remotely from your smartphone.
Please be aware that this is not the official Dyson fan app, however, with this Remote Control app, you are able to control it.

Several remote models are available in this app, allowing you to choose the one that is most suitable for your device.

This app was developed to help you control your Dyson fan device even if you don't have your remote control! Please note that the app requires your phone to have an IR sensor.