diff --git a/homeassistant/components/tplink/light.py b/homeassistant/components/tplink/light.py
index 32af7cf47be..ecbcb84d772 100644
--- a/homeassistant/components/tplink/light.py
+++ b/homeassistant/components/tplink/light.py
@@ -101,7 +101,7 @@ RANDOM_EFFECT_DICT: Final = {
         cv.ensure_list_csv, [vol.Coerce(int)], HSV_SEQUENCE
     ),
     vol.Optional("random_seed", default=100): vol.All(
-        vol.Coerce(int), vol.Range(min=1, max=100)
+        vol.Coerce(int), vol.Range(min=1, max=600)
     ),
     vol.Optional("backgrounds"): vol.All(
         cv.ensure_list,
diff --git a/homeassistant/components/tplink/services.yaml b/homeassistant/components/tplink/services.yaml
index 6f2d9054b1e..9b98018e771 100644
--- a/homeassistant/components/tplink/services.yaml
+++ b/homeassistant/components/tplink/services.yaml
@@ -180,4 +180,4 @@ random_effect:
         number:
           min: 1
           step: 1
-          max: 100
+          max: 600
diff --git a/tests/components/tplink/test_light.py b/tests/components/tplink/test_light.py
index c56bb6399fb..e5d20276490 100644
--- a/tests/components/tplink/test_light.py
+++ b/tests/components/tplink/test_light.py
@@ -523,6 +523,7 @@ async def test_smart_strip_custom_random_effect(hass: HomeAssistant) -> None:
         {
             ATTR_ENTITY_ID: entity_id,
             "init_states": [340, 20, 50],
+            "random_seed": 600,
         },
         blocking=True,
     )
@@ -539,7 +540,7 @@ async def test_smart_strip_custom_random_effect(hass: HomeAssistant) -> None:
             "transition": 0,
             "type": "random",
             "init_states": [[340, 20, 50]],
-            "random_seed": 100,
+            "random_seed": 600,
         }
     )
     strip.set_custom_effect.reset_mock()