You can control the lamp via Bluetooth, a WLAN (WiFi) is not absolutely necessary. Control via Bluetooth works directly via the Philips Hue app and allows basic functions such as switching on and off, dimming and colour changes. However, the Bluetooth range is limited to around nine metres and you can control a maximum of 10 lamps at the same time. For advanced functions and remote control, a Hue Bridge (Wi-Fi control centre) is recommended, but Bluetooth is usually sufficient for a light alarm clock.