Tradfri Warmwhite Lamp is a sensor

Hello,

i have several Tradfri lamps connected to my Tradfri Gateway. Nearly everything is working perfect. Only one lamp differs in terms of usage. My Tradfri lamps with the wide white spectrum can be directly adressed in the configuration like this:

light.wohnzimmer_lampe_1

But my Tradfri lamp, which can only be dimmed, appears as sensor:

sensor.nachtschrank_lampe_1

Both names (“Wohnzimmer Lampe 1” & “Nachtschrank Lampe 1”) are the direct lamp names.

Why is it like that? And how can I change that ?

PS: All lamps have the latest firmware