diff --git a/homeassistant/components/reolink/number.py b/homeassistant/components/reolink/number.py
index 05956aff355..82c1924e27d 100644
--- a/homeassistant/components/reolink/number.py
+++ b/homeassistant/components/reolink/number.py
@@ -67,6 +67,9 @@ NUMBER_ENTITIES = (
         value=lambda api, ch: api.get_focus(ch),
         method=lambda api, ch, value: api.set_zoom(ch, int(value)),
     ),
+    # "Floodlight turn on brightness" controls the brightness of the floodlight when
+    # it is turned on internally by the camera (see "select.floodlight_mode" entity)
+    # or when using the "light.floodlight" entity.
     ReolinkNumberEntityDescription(
         key="floodlight_brightness",
         name="Floodlight turn on brightness",