diff --git a/firmware/esp32/xterra-controller/app_config.cpp b/firmware/esp32/xterra-controller/app_config.cpp
new file mode 100644
index 0000000..4282e4e
--- /dev/null
+++ b/firmware/esp32/xterra-controller/app_config.cpp
@@ -0,0 +1,90 @@
+#include "app_config.h"
+#include "config.h"
+
+AppConfig appConfig;
+
+void loadDefaultConfig() {
+    appConfig.deviceName = DEVICE_NAME;
+
+    appConfig.relays[0] = {
+        "relay_1",
+        "Relay 1",
+        RELAY_STARLINK_PIN,
+        true
+    };
+
+    appConfig.relays[1] = {
+        "relay_2",
+        "Relay 2",
+        RELAY_FRIDGE_PIN,
+        true
+    };
+
+    appConfig.tempSensorCount = 4;
+
+    appConfig.tempSensors[0] = {
+        "temp_1",
+        "Temperature 1",
+        "",
+        true
+    };
+
+    appConfig.tempSensors[1] = {
+        "temp_2",
+        "Temperature 2",
+        "",
+        true
+    };
+
+    appConfig.tempSensors[2] = {
+        "temp_3",
+        "Temperature 3",
+        "",
+        true
+    };
+
+    appConfig.tempSensors[3] = {
+        "temp_4",
+        "Temperature 4",
+        "",
+        true
+    };
+
+    for (int i = 4; i < MAX_TEMP_SENSORS; i++) {
+        appConfig.tempSensors[i] = {
+            "temp_" + String(i + 1),
+            "Temperature " + String(i + 1),
+            "",
+            false
+        };
+    }
+
+    appConfig.bms.enabled = true;
+    appConfig.bms.name = "BMS";
+    appConfig.bms.address = "a5:c2:37:2c:05:dc";
+    appConfig.bms.addressType = "public";
+}
+
+void printConfig() {
+    Serial.println("Config:");
+    Serial.print("  Device: ");
+    Serial.println(appConfig.deviceName);
+
+    Serial.println("  Relays:");
+    for (int i = 0; i < MAX_RELAYS; i++) {
+        Serial.print("    ");
+        Serial.print(appConfig.relays[i].id);
+        Serial.print(" / ");
+        Serial.print(appConfig.relays[i].name);
+        Serial.print(" / GPIO ");
+        Serial.println(appConfig.relays[i].pin);
+    }
+
+    Serial.println("  BMS:");
+    Serial.print("    Enabled: ");
+    Serial.println(appConfig.bms.enabled ? "true" : "false");
+    Serial.print("    Name: ");
+    Serial.println(appConfig.bms.name);
+    Serial.print("    Address: ");
+    Serial.println(appConfig.bms.address);
+}
diff --git a/firmware/esp32/xterra-controller/app_config.h b/firmware/esp32/xterra-controller/app_config.h
new file mode 100644
index 0000000..2063675
--- /dev/null
+++ b/firmware/esp32/xterra-controller/app_config.h
@@ -0,0 +1,40 @@
+#pragma once
+
+#include <Arduino.h>
+
+#define MAX_RELAYS 2
+#define MAX_TEMP_SENSORS 8
+
+struct RelayConfig {
+    String id;
+    String name;
+    uint8_t pin;
+    bool enabled;
+};
+
+struct TempSensorConfig {
+    String id;
+    String name;
+    String address;
+    bool enabled;
+};
+
+struct BmsConfig {
+    bool enabled;
+    String name;
+    String address;
+    String addressType;
+};
+
+struct AppConfig {
+    String deviceName;
+    RelayConfig relays[MAX_RELAYS];
+    TempSensorConfig tempSensors[MAX_TEMP_SENSORS];
+    int tempSensorCount;
+    BmsConfig bms;
+};
+
+extern AppConfig appConfig;
+
+void loadDefaultConfig();
+void printConfig();
diff --git a/firmware/esp32/xterra-controller/xterra-controller.ino b/firmware/esp32/xterra-controller/xterra-controller.ino
index ce5f109..19c9b79 100644
--- a/firmware/esp32/xterra-controller/xterra-controller.ino
+++ b/firmware/esp32/xterra-controller/xterra-controller.ino
@@ -9,6 +9,7 @@
 #include "bms.h"
 #include "alarms.h"
 #include "system_status.h"
+#include "app_config.h"
 
 WebServer server(80);
 HardwareSerial DashboardSerial(2);
@@ -131,6 +132,33 @@ void buildStatusDocument(JsonDocument& doc) {
     system["build_date"] = __DATE__;
     system["build_time"] = __TIME__;
     system["uptime_seconds"] = millis() / 1000;
+
+    JsonObject configObj = doc.createNestedObject("config");
+    configObj["device_name"] = appConfig.deviceName;
+
+    JsonArray configRelays = configObj.createNestedArray("relays");
+    for (int i = 0; i < MAX_RELAYS; i++) {
+        JsonObject relayConfig = configRelays.createNestedObject();
+        relayConfig["id"] = appConfig.relays[i].id;
+        relayConfig["name"] = appConfig.relays[i].name;
+        relayConfig["pin"] = appConfig.relays[i].pin;
+        relayConfig["enabled"] = appConfig.relays[i].enabled;
+    }
+
+    JsonObject bmsConfig = configObj.createNestedObject("bms");
+    bmsConfig["enabled"] = appConfig.bms.enabled;
+    bmsConfig["name"] = appConfig.bms.name;
+    bmsConfig["address"] = appConfig.bms.address;
+    bmsConfig["address_type"] = appConfig.bms.addressType;
+
+    JsonArray tempConfigs = configObj.createNestedArray("temperature_sensors");
+    for (int i = 0; i < MAX_TEMP_SENSORS; i++) {
+        JsonObject tempConfig = tempConfigs.createNestedObject();
+        tempConfig["id"] = appConfig.tempSensors[i].id;
+        tempConfig["name"] = appConfig.tempSensors[i].name;
+        tempConfig["address"] = appConfig.tempSensors[i].address;
+        tempConfig["enabled"] = appConfig.tempSensors[i].enabled;
+    }
 }
 
 void sendStatus(Stream& output, bool pretty = false) {
@@ -333,9 +361,15 @@ void setup() {
 
     Serial.println();
     Serial.println("==================================");
+
+    loadDefaultConfig();
+    printConfig();
     Serial.println("Xterra Controller Booting");
     Serial.println("==================================");
 
+    loadDefaultConfig();
+    printConfig();
+
     pinMode(IGNITION_PIN, INPUT);
 
     initRelays();