It seems like a copy-paste error that this was added to the timer entity. It's proper place was on the light, where it also exists.
@@ -55,16 +55,6 @@ entities:
mapping:
- scale: 60
step: 60
- - id: 51
- name: effect
- type: string
- mapping:
- - dps_val: scene
- value: Scene
- - dps_val: laser
- value: Laser
- - dps_val: colour
- value: Color
- entity: light
translation_key: laser
dps: