The system has out-of-home functionality, so your mobile phone can still operate the system even if you aren’t receiving a Wi-Fi signal. The lights normally work wherever you receive a Wi-Fi signal from the network to which your Bridge is paired. However, if you have a large house and use Wi-Fi amplifiers, you may experience problems. In this case, you can place an extra Hue light between the Bridge and the difficult-to-control light. It will function as a ‘repeater’ and, of course, has the same advantages as your other Hue lights.