diff --git a/README.md b/README.md
index 7c37d5b..42eb4f2 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,7 @@ media_lights_sync:
 | `ha_url`                 | True     | string | `None`              | The URL to your Home Assistant. Only useful if `photo_attribute` is a relative URL<sup id="ha-url">[1](#ha-url-note)</sup>. Examples: `https://my-ha.duckdns.org`, `http://192.168.1.123:8123`. |
 | `use_saturated_colors`   | True     | string | `False`             | Increase the saturation and brightness of the colors.                                                                                                                                           |
 | `use_current_brightness` | True     | string | `False`             | Do not change lights brightness. If `False`, it will always sets all lights to maximum brightness.                                                                                              |
+| `transition`             | True     | number | `None`              | Number that represents the time (in seconds) the light should take to transition to the new state.                                                                                              |
 | `condition`              | True     | object |                     | Sync lights only if the state of the condition entity is valid.                                                                                                                                 |
 | `condition.entity`       | False    | string |                     | The entity_id of the condition.                                                                                                                                                                 |
 | `condition.state`        | False    | string |                     | The state to match in order for the lights to sync.                                                                                                                                             |
diff --git a/apps/media_lights_sync/media_lights_sync.py b/apps/media_lights_sync/media_lights_sync.py
index 8a69eee..8c2ded3 100644
--- a/apps/media_lights_sync/media_lights_sync.py
+++ b/apps/media_lights_sync/media_lights_sync.py
@@ -18,6 +18,7 @@ def initialize(self):
         self.ha_url = self.args.get("ha_url", None)
         self.use_current_brightness = self.args.get("use_current_brightness", False)
         self.condition = self.args.get("condition")
+        self.transition = self.args.get("transition", None)
         self.lights = self.args["lights"]
         self.use_saturated_colors = self.args.get("use_saturated_colors", False)
 
@@ -42,6 +43,8 @@ def set_light_rgb(self, light, color):
             light_kwargs["rgb_color"] = self.get_saturated_color(color)
         if not self.use_current_brightness:
             light_kwargs["brightness"] = 255
+        if self.transition is not None:
+            light_kwargs["transition"] = self.transition
         self.turn_on(light, **light_kwargs)
 
     def get_saturated_color(self, color):
diff --git a/info.md b/info.md
index 9afca3d..8f53beb 100644
--- a/info.md
+++ b/info.md
@@ -25,6 +25,7 @@ media_lights_sync:
 | `ha_url`                 | True     | string | `None`              | The URL to your Home Assistant. Only useful if `photo_attribute` is a relative URL<sup id="ha-url">[1](#ha-url-note)</sup>. Examples: `https://my-ha.duckdns.org`, `http://192.168.1.123:8123`. |
 | `use_saturated_colors`   | True     | string | `False`             | Increase the saturation and brightness of the colors.                                                                                                                                           |
 | `use_current_brightness` | True     | string | `False`             | Do not change lights brightness. If `False`, it will always sets all lights to maximum brightness.                                                                                              |
+| `transition`             | True     | number | `None`              | Number that represents the time (in seconds) the light should take to transition to the new state.                                                                                              |
 | `condition`              | True     | object |                     | Sync lights only if the state of the condition entity is valid.                                                                                                                                 |
 | `condition.entity`       | False    | string |                     | The entity_id of the condition.                                                                                                                                                                 |
 | `condition.state`        | False    | string |                     | The state to match in order for the lights to sync.                                                                                                                                             |