Abstract: A universal lamp includes: a lamp module (1?) with a light source, a stationary holder (15) to which the lamp module can be easily releasably connected, and a power supply device which includes two electrical contacts (9?) which are provided on the holder and which are conductingly connected to a power supply and two electrical contacts (7?) which are provided on the lamp module and which are conductingly connected to the light source and, when the lamp module is connected to the holder, are conductingly connected to the electrical contacts thereof, wherein at least one electrical contact on the holder and at least one electrical contact on the lamp module are in the form of a magnet arrangement for holding the lamp module fast to the holder.