Smart bulb in a pack of 3: Decorative Philips Hue White E27 LED filament lamp in classic bulb shapeThis bulb combines the retro look of the filament optics and modern controllability - and is available here in a set of 3. The E27 bulb in classic bulb shape with LEDs in a spiral arrangement comes into its own ideally in luminaires with an open shade. The light is particularly warm with a color temperature of 2,100 Kelvin.Dimming and switching can be done directly with the Hue dimmer switch (see accessories) or the Hue Bluetooth app on the tablet / smartphone. Those who want to switch the lamp to create scenes with other smart devices, operate it by voice command and activate it according to schedules or while on the move need a ZigBee bridge (e.g. Hue bridge, see accessories), a router and the corresponding smartphone app of the respective smart home system.Technical data:- warm white light (2,100 K)- Bluetooth range indoors approx. 10 mSpecial features / compatibility:- controllable with the Hue dimmer switch (see accessories)- controllable with matching Hue app and Hue Bluetooth app- compatible with existing Philips Hue system and other ZigBee-based systems such as from Innogy, Bosch, Telekom (Magenta) and Busch-Jäger- voice control possible with Amazon Alexa, Apple HomeKit (Siri) and Google Assistant- dimmable via app, voice command and dimmer switch- smart light control option a: ZigBee integration via bridge and router, such as the Philips Hue Bridge (see accessories); this enables control on-site or on-the-go via Hue app (free for Android and iOS) or on-site via voice command using Amazon Alexa, Apple HomeKit (Siri) and Google Assistant.- smart lighting control option b: Direct on-site control via Bluetooth using the free Hue Bluetooth app; this requires a smartphone or tablet running Android 7 or iOS 11 or later and Bluetooth Low Energy (BLE) 4.0 or later. A router, Wi-Fi or data connection is not required. When using more than ten lamps, the use of a bridge is recommended. One lamp can store connections with up to 15 smartphones/tablets; individual settings are assigned individually.