If the base of your Withings Home™ is blinking red, it can mean one of two things:
- Either the setup of your Withings Home™ has failed, in which case you should try to install it again, or
- The "Display Air Quality alert on the device" option is enabled and the VOC level is over 2,000 ppm.
If your Withings Home™ displays a flashing red light because of the VOC level, simply open your window to renew the air inside.
You can enable or disable this alert from the Withings Home™ app by going to Settings, tapping your Withings Home™ and tapping Display Air Quality alert on the device.