Light and adapters for controlling the lamp

The invention relates to a lamp (11, 21) with an adapter (100, 200) or such an adapter to control the light. In the adapter is a wireless network module, in particular a WLAN or WPAN module (110, 210) for wireless communication via an integrated or externally connected radio antenna (212 112) are embedded. also embedded in the adapter (100, 200) is an arithmetic unit (120, 220). This is programmed for lighting control according to an automation interface, in particular according to DALI (Digital Addressable Lighting Interface) specification. The adapter has a built-in server (130, 230) for providing compatible with popular devices for wireless networks user interface via the wireless network. Computing unit (120, 220) and Server (130, 230) are programmed such that the light (11, 21) is operable by means of the user interface.