diff --git a/test/fixtures/loadconfig_hems75.json b/test/fixtures/loadconfig_hems75.json
new file mode 100644
index 0000000..85422dc
--- /dev/null
+++ b/test/fixtures/loadconfig_hems75.json
@@ -0,0 +1,37 @@
+{
+  "_source": "dump reel HEMS 192.168.1.75 (nymea 1.15.2+202606191336~trixie1, experience NymeaEnergy 0.8), NymeaEnergy.GetLoadConfig, 2026-08-25",
+  "_note": "Source de verite du modele Dart. Contient les charges utiles VIDES des mecanismes non utilises (sgReady:{}, powerLevels:[], needs a defaut) : serialisation par meta-objet cote plugin. Ne PAS nettoyer.",
+  "loadConfigs": [
+    {
+      "adapter": "relay-router",
+      "enabled": true,
+      "id": "chauffe-eau",
+      "label": "chauffe-eau",
+      "maxPowerW": 0,
+      "minOffS": 60,
+      "minOnS": 60,
+      "mode": "fixed",
+      "needs": {
+        "dailyDeadline": "",
+        "minEnergyWhPerDay": 0
+      },
+      "powerLevels": [],
+      "priority": 1,
+      "relays": [
+        {
+          "powerW": 500,
+          "thingId": "{8538782f-2c8c-4a30-bfce-c8140f791c9b}"
+        },
+        {
+          "powerW": 1000,
+          "thingId": "{2ebe6bef-829b-4695-9d11-ddb4c16c5448}"
+        },
+        {
+          "powerW": 2000,
+          "thingId": "{b033b212-1adb-4df0-ba2b-8fa477de52a2}"
+        }
+      ],
+      "sgReady": {}
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/fixtures/loadconfig_schema_hems75.json b/test/fixtures/loadconfig_schema_hems75.json
new file mode 100644
index 0000000..34d5522
--- /dev/null
+++ b/test/fixtures/loadconfig_schema_hems75.json
@@ -0,0 +1,63 @@
+{
+  "_source": "JSONRPC.Introspect sur 192.168.1.75, 2026-08-25 — schema REELLEMENT accepte par la box",
+  "_note": "nymea rejette toute cle inconnue (jsonvalidator.cpp:143 \"Invalid key\"). Ce schema est donc la liste exhaustive de ce que SetLoadConfig accepte sur cette box.",
+  "SetLoadConfig_params": {
+    "loadConfigs": [
+      {
+        "adapter": "String",
+        "enabled": "Bool",
+        "id": "String",
+        "label": "String",
+        "mode": "String",
+        "o:maxPowerW": "Uint",
+        "o:minOffS": "Uint",
+        "o:minOnS": "Uint",
+        "o:needs": {
+          "o:dailyDeadline": "String",
+          "o:minEnergyWhPerDay": "Uint"
+        },
+        "o:powerLevels": [
+          "Uint"
+        ],
+        "o:relays": [
+          {
+            "powerW": "Uint",
+            "thingId": "String"
+          }
+        ],
+        "o:sgReady": {
+          "o:minStateHoldS": "Uint",
+          "o:states": [
+            {
+              "estimatedPowerW": "Double",
+              "relays": [
+                "String"
+              ],
+              "state": "Uint"
+            }
+          ]
+        },
+        "priority": "Uint"
+      }
+    ]
+  },
+  "LoadConfig_getType": {
+    "adapter": "String",
+    "enabled": "Bool",
+    "id": "String",
+    "label": "String",
+    "maxPowerW": "Int",
+    "minOffS": "Int",
+    "minOnS": "Int",
+    "mode": "String",
+    "needs": "$ref:LoadConfigNeeds",
+    "powerLevels": [
+      "Variant"
+    ],
+    "priority": "Int",
+    "relays": [
+      "Variant"
+    ],
+    "sgReady": "Object"
+  }
+}
\ No newline at end of file