diff --git a/apps/abstraction/transformation.py b/apps/abstraction/transformation.py
index 260d8ea..d6a7619 100644
--- a/apps/abstraction/transformation.py
+++ b/apps/abstraction/transformation.py
@@ -341,6 +341,42 @@ def _transform_relay_zigbee2mqtt_to_abstract(payload: dict[str, Any]) -> dict[st
     return abstract_payload
 
 
+# ============================================================================
+# HANDLER FUNCTIONS: relay - shelly technology
+# ============================================================================
+
+def _transform_relay_shelly_to_vendor(payload: dict[str, Any]) -> str:
+    """Transform abstract relay payload to Shelly format.
+    
+    Shelly expects plain text 'on' or 'off' (not JSON).
+    - power: 'on'/'off' -> 'on'/'off' (plain string)
+    
+    Example:
+    - Abstract: {'power': 'on'}
+    - Shelly: 'on'
+    """
+    power = payload.get("power", "off")
+    return power
+
+
+def _transform_relay_shelly_to_abstract(payload: str) -> dict[str, Any]:
+    """Transform Shelly relay payload to abstract format.
+    
+    Shelly sends plain text 'on' or 'off' (not JSON).
+    - 'on'/'off' -> power: 'on'/'off'
+    
+    Example:
+    - Shelly: 'on'
+    - Abstract: {'power': 'on'}
+    """
+    # Shelly payload is a plain string, not a dict
+    if isinstance(payload, str):
+        return {"power": payload.strip()}
+    
+    # Fallback if it's already a dict (shouldn't happen)
+    return payload
+
+
 # ============================================================================
 # HANDLER FUNCTIONS: max technology (Homegear MAX!)
 # ============================================================================
@@ -458,6 +494,8 @@ TRANSFORM_HANDLERS: dict[tuple[str, str, str], TransformHandler] = {
     # Relay transformations
     ("relay", "zigbee2mqtt", "to_vendor"): _transform_relay_zigbee2mqtt_to_vendor,
     ("relay", "zigbee2mqtt", "to_abstract"): _transform_relay_zigbee2mqtt_to_abstract,
+    ("relay", "shelly", "to_vendor"): _transform_relay_shelly_to_vendor,
+    ("relay", "shelly", "to_abstract"): _transform_relay_shelly_to_abstract,
 }
 
 
diff --git a/config/layout.yaml b/config/layout.yaml
index 90e91b2..f331c3e 100644
--- a/config/layout.yaml
+++ b/config/layout.yaml
@@ -56,17 +56,13 @@ rooms:
     icon: 🌡️
     rank: 95
   - device_id: kontakt_esszimmer_strasse_rechts
-    title: Kontakt Straße rechts
+    title: Kontakt Straße rechtsFtest
     icon: 🪟
     rank: 96
   - device_id: kontakt_esszimmer_strasse_links
     title: Kontakt Straße links
     icon: 🪟
     rank: 97
-  - device_id: test_relay_1
-    title: Test Relay 1
-    icon: ⚡
-    rank: 98
 - name: Wohnzimmer
   devices:
   - device_id: lampe_naehtischchen_wohnzimmer