This clear smart lamp with E27 fitting fits in most luminaires and makes it possible to adjust the color temperature (1800-3000K) with the free Calex app. Simply change the brightness from bright and brighter light to dimmer warmer ambient light for cozy evenings. Set timers and routines to optimize living comfort. These smart lamps work on a normal wall switch and via WiFi. Not on a dimmer switch. Via the Calex smart remote control and the free Calex app you can connect these lamps to WiFi and set them to the desired ambiance. USPs - Connection via WiFi - Easy installation - Ready to use in 3 simple steps - CCT: 1800-3000K (white color) - Dimmable via app and remote control