diff --git a/apps/ui/templates/device.html b/apps/ui/templates/device.html
index 4892f2c..035a205 100644
--- a/apps/ui/templates/device.html
+++ b/apps/ui/templates/device.html
@@ -358,6 +358,7 @@
         let deviceData = null;
         let deviceState = {};
         let roomName = '';
+        let deviceStateUnknown = false;
 
         // Device type icons
         const deviceIcons = {
@@ -380,8 +381,19 @@
                 // NEW: Use new endpoints for device info and layout
                 deviceData = await window.apiClient.getDevice(deviceId);
                 console.log("Loaded device data:", deviceData);
-                deviceState = await window.apiClient.getDeviceState(deviceId);
-                console.log("Loaded device state:", deviceState);
+
+                try {
+                    deviceState = await window.apiClient.getDeviceState(deviceId);
+                    console.log("Loaded device state:", deviceState);
+                    if (!deviceState || Object.keys(deviceState).length === 0) {
+                        deviceStateUnknown = true;
+                        deviceState = {};
+                    }
+                } catch (stateError) {
+                    console.warn('No state for device, using unknown state:', stateError);
+                    deviceStateUnknown = true;
+                    deviceState = {};
+                }
                 const layoutInfo = await window.apiClient.getDeviceLayout(deviceId);
                 console.log("Loaded layout info:", layoutInfo);
                 roomName = layoutInfo.room;
@@ -517,6 +529,14 @@
                 }, 0);
             }
 
+            if (deviceStateUnknown) {
+                const hint = document.createElement('div');
+                hint.className = 'device-meta';
+                hint.style.marginTop = '12px';
+                hint.textContent = 'Status unbekannt';
+                card.appendChild(hint);
+            }
+
             container.appendChild(card);
         }
 
@@ -552,6 +572,14 @@
             `;
             card.appendChild(sliderGroup);
 
+            if (deviceStateUnknown) {
+                const hint = document.createElement('div');
+                hint.className = 'device-meta';
+                hint.style.marginTop = '12px';
+                hint.textContent = 'Status unbekannt';
+                card.appendChild(hint);
+            }
+
             container.appendChild(card);
 
             setTimeout(() => {
@@ -580,6 +608,14 @@
             powerGroup.appendChild(powerButton);
             card.appendChild(powerGroup);
 
+            if (deviceStateUnknown) {
+                const hint = document.createElement('div');
+                hint.className = 'device-meta';
+                hint.style.marginTop = '12px';
+                hint.textContent = 'Status unbekannt';
+                card.appendChild(hint);
+            }
+
             container.appendChild(card);
         }
 
@@ -598,6 +634,14 @@
             `;
             card.appendChild(statusDiv);
 
+            if (deviceStateUnknown) {
+                const hint = document.createElement('div');
+                hint.className = 'device-meta';
+                hint.style.marginTop = '12px';
+                hint.textContent = 'Status unbekannt';
+                card.appendChild(hint);
+            }
+
             container.appendChild(card);
         }