diff --git a/lib/check_mk/base/plugins/agent_based/unifi_controller.py b/lib/check_mk/base/plugins/agent_based/unifi_controller.py
index 715c4f3..a4b9b06 100644
--- a/lib/check_mk/base/plugins/agent_based/unifi_controller.py
+++ b/lib/check_mk/base/plugins/agent_based/unifi_controller.py
@@ -270,6 +270,7 @@ register.inventory_plugin(
 def discovery_unifi_device(section):
     yield Service(item="Device Status")
     yield Service(item="Unifi Device")
+    yield Service(item="Unifi Device Uptime")
     yield Service(item="Active-User")
     if  section.type != "uap":  # kein satisfaction bei ap .. radio/ssid haben schon
         yield Service(item="Satisfaction")
@@ -315,7 +316,14 @@ def check_unifi_device(item,section):
             )
         yield Metric("user_sta",_active_user)
         yield Metric("guest_sta",_safe_int(section.guest_num_sta))
-
+    if item == "Unifi Device Uptime":
+        _uptime = int(section.uptime) if section.uptime else -1
+        if _uptime > 0:
+            yield Result(
+                state=State.OK,
+                summary=render.timespan(_uptime)
+            )
+            yield Metric("unifi_uptime",_uptime)
     if item == "Satisfaction":
         yield Result(
             state=State.OK,