diff --git a/index.html b/index.html
index 6d2f311..02b189d 100644
--- a/index.html
+++ b/index.html
@@ -228,12 +228,12 @@
     timeout = setTimeout(() => request(), 2000);
 
     const r = new XMLHttpRequest();
-    r.open("GET", getUrl(`set?${query}`));
+    r.open("GET", getUrl(`status?${query}`));
     r.onreadystatechange = () => {
       if (r.readyState === 4 && r.status === 200) {
         data = JSON.parse(r.response);
         dataAge = Date.now();
-        title.innerText = data.hostname;
+        title.innerText = data.wifi.hostname;
         for (let index = 0; index < data.relays.length; index++) {
           const relayData = data.relays[index];
           const relayTag = document.getElementById("relay" + index) || create(index);
diff --git a/platformio.ini b/platformio.ini
index cb9a730..0d74ae0 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -9,12 +9,12 @@ lib_deps = bblanchon/ArduinoJson @ 7.4.2
 [Sonoff4ChPro]
 platform = espressif8266
 board = esp8285
-build_flags = -D Sonoff4ChPro
+build_flags = -D Sonoff4ChPro -D WIFI_HOSTNAME_FALLBACK=\"PatrixSonoff4ChPro\"
 
 [GosundSP111]
 platform = espressif8266
 board = esp8285
-build_flags = -D GosundSP111
+build_flags = -D GosundSP111 -D WIFI_HOSTNAME_FALLBACK=\"PatrixGosundSP111\"
 
 [ESP32_TEST]
 platform = espressif32
diff --git a/src/http.cpp b/src/http.cpp
index bb61f19..3bf0c02 100644
--- a/src/http.cpp
+++ b/src/http.cpp
@@ -4,6 +4,8 @@
 #include <ArduinoJson.h>
 #include <LittleFS.h>
 
+#include "wifi.h"
+
 #ifdef ESP8266
 #include <ESP8266WebServer.h>
 
@@ -18,63 +20,75 @@ WebServer server(80);
 
 bool httpRunning = false;
 
-void httpRelay(const int index, Relay &relay) {
-  const auto nameKey = String("name") + index;
-  if (server.hasArg(nameKey)) {
-    const auto name = server.arg(nameKey);
-    relay.setName(name);
-  }
+File httpUploadFile;
 
-  const auto topicKey = String("topic") + index;
-  if (server.hasArg(topicKey)) {
-    const auto topic = server.arg(topicKey);
-    relay.setTopic(topic);
+void httpString(const String &key, const std::function<void(const String &)> &modifier) {
+  if (server.hasArg(key)) {
+    const auto name = server.arg(key);
+    modifier(name);
   }
+}
 
-  const auto stateKey = String("state") + index;
-  if (server.hasArg(stateKey)) {
-    const auto state = server.arg(stateKey);
+void httpBool(const String &key, const std::function<void(const bool &)> &modifier) {
+  if (server.hasArg(key)) {
+    const auto state = server.arg(key);
     if (state == "true") {
-      relay.set(true);
+      modifier(true);
     } else if (state == "false") {
-      relay.set(false);
+      modifier(false);
     }
   }
+}
 
-  const auto initialKey = String("initial") + index;
-  if (server.hasArg(initialKey)) {
-    const auto initial = server.arg(initialKey);
-    if (initial == "OFF") {
-      relay.setInitial(INITIAL_OFF);
-    } else if (initial == "ON") {
-      relay.setInitial(INITIAL_ON);
-    } else if (initial == "CYCLE") {
-      relay.setInitial(INITIAL_CYCLE);
+void httpLong(const String &key, const std::function<void(const long &)> &modifier) {
+  if (server.hasArg(key)) {
+    modifier(server.arg(key).toInt());
+  }
+}
+
+void httpInitial(const String &key, const std::function<void(const Initial &)> &modifier) {
+  httpString(key, [&modifier](const String &value) {
+    if (value == "OFF") {
+      modifier(INITIAL_OFF);
+    } else if (value == "ON") {
+      modifier(INITIAL_ON);
+    } else if (value == "CYCLE") {
+      modifier(INITIAL_CYCLE);
     }
-  }
+  });
+}
 
-  const auto onCountKey = String("onCount") + index;
-  if (server.hasArg(onCountKey)) {
-    const auto value = server.arg(onCountKey).toInt();
-    relay.setOnCount(value);
-  }
+void httpRelay(const int index, Relay &relay) {
+  const String suffix(index);
+  httpString("name" + suffix, [&relay](const String &value) { relay.setName(value); });
+  httpInitial("initial" + suffix, [&relay](const Initial &value) { relay.setInitial(value); });
+  httpLong("onCount" + suffix, [&relay](const long &value) { relay.setOnCount(value); });
+  httpLong("onMillis" + suffix, [&relay](const long &value) { relay.setOnMillis(value); });
+  httpLong("offMillis" + suffix, [&relay](const long &value) { relay.setOffMillis(value); });
 
-  const auto onMillisKey = String("onMillis") + index;
-  if (server.hasArg(onMillisKey)) {
-    const auto value = server.arg(onMillisKey).toInt();
-    relay.setOnMillis(value);
-  }
+  httpString("topic" + suffix, [&relay](const String &value) { relay.setTopic(value); });
 
-  const auto offMillisKey = String("offMillis") + index;
-  if (server.hasArg(offMillisKey)) {
-    const auto value = server.arg(offMillisKey).toInt();
-    relay.setOffMillis(value);
-  }
+  httpBool("gridPowerDeltaOnEnabled" + suffix, [&relay](const long &value) { relay.setGridPowerDeltaOnEnabled(value); });
+  httpLong("gridPowerDeltaOnThreshold" + suffix, [&relay](const long &value) { relay.setGridPowerDeltaOnThreshold(value); });
+  httpLong("gridPowerDeltaOnDelay" + suffix, [&relay](const long &value) { relay.setGridPowerDeltaOnDelay(value); });
+  httpBool("gridPowerDeltaOffEnabled" + suffix, [&relay](const long &value) { relay.setGridPowerDeltaOffEnabled(value); });
+  httpLong("gridPowerDeltaOffThreshold" + suffix, [&relay](const long &value) { relay.setGridPowerDeltaOffThreshold(value); });
+  httpLong("gridPowerDeltaOffDelay" + suffix, [&relay](const long &value) { relay.setGridPowerDeltaOffDelay(value); });
+
+  httpBool("state" + suffix, [&relay](const bool &value) { relay.set(value); });
 }
 
 void httpStatus() {
   JsonDocument json;
-  json["hostname"] = WiFi.getHostname();
+
+  const auto wifi = json["wifi"].to<JsonObject>();
+  wifi["hostname"] = WiFi.getHostname();
+  wifi["ssid"] = WiFi.SSID();
+
+  const auto mqtt = json["mqtt"].to<JsonObject>();
+  mqtt["user"] = getMqttUser();
+  mqtt["host"] = getMqttHost();
+  mqtt["port"] = getMqttPort();
 
   const auto relays = json["relays"].to<JsonArray>();
   relay0.json(relays.add<JsonObject>());
@@ -90,27 +104,25 @@ void httpStatus() {
 }
 
 void httpSet() {
+  httpString("wifiHostname", wifiSetHostname);
+  httpString("wifiSSID", wifiSetSSID);
+  httpString("wifiPassword", wifiSetPassword);
+
+  httpString("mqttHost", mqttSetHost);
+  httpLong("mqttPort", mqttSetPort);
+  httpString("mqttUser", mqttSetUser);
+  httpString("mqttPassword", mqttSetPassword);
+
   httpRelay(0, relay0);
 #ifdef Sonoff4ChPro
   httpRelay(1, relay1);
   httpRelay(2, relay2);
   httpRelay(3, relay3);
 #endif
+
   httpStatus();
 }
 
-void httpOff() {
-  relay0.set(false);
-#ifdef Sonoff4ChPro
-  relay1.set(false);
-  relay2.set(false);
-  relay3.set(false);
-#endif
-  httpStatus();
-}
-
-File httpUploadFile;
-
 void httpUpload(const char *name) {
   const auto upload = server.upload();
   if (upload.status == UPLOAD_FILE_START) {
@@ -138,10 +150,8 @@ void httpSetup() {
   server.serveStatic("/", LittleFS, "/index.html");
   server.serveStatic("/icon.svg", LittleFS, "/icon.svg");
 
-  server.on("/set", httpSet);
-  server.on("/set/", httpSet);
-  server.on("/off", httpOff);
-  server.on("/off/", httpOff);
+  server.on("/status", httpSet);
+  server.on("/status/", httpSet);
 
   server.on("/upload/index", HTTP_POST, [] { server.send(200); }, [] { httpUpload("index.html"); });
   server.on("/upload/icon", HTTP_POST, [] { server.send(200); }, [] { httpUpload("icon.svg"); });
diff --git a/src/mqtt.cpp b/src/mqtt.cpp
index 743c026..30e862f 100644
--- a/src/mqtt.cpp
+++ b/src/mqtt.cpp
@@ -1,16 +1,43 @@
 #include "mqtt.h"
+
+#ifdef ESP32
+#include <WiFi.h>
+#endif
+
+#ifdef ESP8266
+#include <ESP8266WiFi.h>
+#endif
+
 #include "config.h"
 
 #include <WiFiClient.h>
 
 #include "PubSubClient.h"
 
+#define MQTT_HOST_KEY           "/mqtt/host"
+#define MQTT_HOST_FALLBACK      "10.0.0.50"
+
+#define MQTT_PORT_KEY           "/mqtt/port"
+#define MQTT_PORT_FALLBACK      1883
+
+#define MQTT_USER_KEY           "/mqtt/user"
+#define MQTT_USER_FALLBACK      ""
+
+#define MQTT_PASSWORD_KEY       "/mqtt/password"
+#define MQTT_PASSWORD_FALLBACK  ""
+
 const String GRID_POWER_DELTA_TOPIC = "electricity/grid/power/signed/w";
 
 WiFiClient wifiClient;
 
 PubSubClient client(wifiClient);
 
+String mqttHost = MQTT_HOST_FALLBACK;
+
+long mqttPort = MQTT_PORT_FALLBACK;
+
+String mqttUser = MQTT_USER_FALLBACK;
+
 bool mqttShouldConnect = false;
 
 unsigned long mqttLast = 0;
@@ -48,19 +75,18 @@ void mqttLoop() {
       Serial.println("[MQTT] Stopped.");
     }
   } else if (mqttShouldConnect) {
-    const auto host = configRead("/mqtt/host", "10.0.0.50", false);
-    if (host == "") {
+    mqttHost = configRead(MQTT_HOST_KEY, MQTT_HOST_FALLBACK, false);
+    mqttPort = configRead(MQTT_PORT_KEY, MQTT_PORT_FALLBACK, true);
+    mqttUser = configRead(MQTT_USER_KEY, MQTT_USER_FALLBACK);
+    const auto mqttPass = configRead(MQTT_PASSWORD_KEY, MQTT_PASSWORD_FALLBACK, true, true);
+    if (mqttHost == "") {
       return;
     }
     if (mqttLast == 0 || millis() - mqttLast >= 3000) {
-      const auto id = configRead("/mqtt/id", "test");
-      const auto user = configRead("/mqtt/user", "");
-      const auto pass = configRead("/mqtt/pass", "", true, true);
-      const auto port = configRead("/mqtt/port", 1883L);
       mqttLast = max(1UL, millis());
-      client.setServer(host.c_str(), port);
-      Serial.printf("[MQTT] Connecting: %s:%ld\n", host.c_str(), port);
-      if (client.connect(id.c_str(), user.c_str(), pass.c_str())) {
+      client.setServer(mqttHost.c_str(), mqttPort);
+      Serial.printf("[MQTT] Connecting: %s:%ld\n", mqttHost.c_str(), mqttPort);
+      if (client.connect(WiFi.getHostname(), mqttUser.c_str(), mqttPass.c_str())) {
         Serial.printf("[MQTT] Connected.\n");
         client.subscribe(GRID_POWER_DELTA_TOPIC.c_str());
         client.setCallback(mqttReceive);
@@ -84,3 +110,34 @@ void mqttPublish(const String &topic, const JsonDocument &json) {
   const auto size = serializeJson(json, buffer);
   client.publish(topic.c_str(), buffer, size);
 }
+
+String getMqttUser() {
+  return mqttUser;
+}
+
+String getMqttHost() {
+  return mqttHost;
+}
+
+long getMqttPort() {
+  return mqttPort;
+}
+
+void mqttSetHost(const String &value) {
+  mqttHost = value;
+  configWrite(MQTT_HOST_KEY, String(MQTT_HOST_FALLBACK), value);
+}
+
+void mqttSetPort(const long &value) {
+  mqttPort = value;
+  configWrite(MQTT_PORT_KEY,MQTT_HOST_FALLBACK, value);
+}
+
+void mqttSetUser(const String &value) {
+  mqttUser = value;
+  configWrite(MQTT_USER_KEY, String(MQTT_HOST_FALLBACK), value);
+}
+
+void mqttSetPassword(const String &value) {
+  configWrite(MQTT_PASSWORD_KEY,MQTT_HOST_FALLBACK, value, true);
+}
diff --git a/src/mqtt.h b/src/mqtt.h
index 1d6d53c..6311150 100644
--- a/src/mqtt.h
+++ b/src/mqtt.h
@@ -15,4 +15,18 @@ void mqttStop();
 
 void mqttPublish(const String &topic, const JsonDocument &json);
 
+String getMqttUser();
+
+String getMqttHost();
+
+long getMqttPort();
+
+void mqttSetHost(const String &value);
+
+void mqttSetPort(const long &value);
+
+void mqttSetUser(const String &value);
+
+void mqttSetPassword(const String &value);
+
 #endif
diff --git a/src/wifi.cpp b/src/wifi.cpp
index c5d9d08..4471357 100644
--- a/src/wifi.cpp
+++ b/src/wifi.cpp
@@ -3,18 +3,16 @@
 #include "http.h"
 #include "io.h"
 
-#define CONFIG_HOSTNAME         "/wifi/hostname"
-#define CONFIG_WIFI_SSID        "/wifi/ssid"
-#define CONFIG_WIFI_PASSWORD    "/wifi/password"
-
-#ifndef DEFAULT_HOSTNAME
-#define DEFAULT_HOSTNAME        "PatrixSonoff4ChPro"
-#endif
-#define DEFAULT_WIFI_SSID       "HappyNet"
-#define DEFAULT_WIFI_PASSWORD   "1Grausame!Sackratte7"
-
 #include <ArduinoOTA.h>
 
+#define WIFI_HOSTNAME_KEY         "/wifi/hostname"
+
+#define WIFI_SSID_KEY             "/wifi/ssid"
+#define WIFI_SSID_FALLBACK        "HappyNet"
+
+#define WIFI_PASSWORD_KEY         "/wifi/password"
+#define WIFI_PASSWORD_FALLBACK    "1Grausame!Sackratte7"
+
 bool wifiConnected = false;
 
 unsigned long wifiLast = 0;
@@ -28,9 +26,9 @@ void wifiConnect() {
 
   status.cycle(500, 500);
 
-  const auto hostname = configRead(CONFIG_HOSTNAME, DEFAULT_HOSTNAME);
-  const auto wifiSSID = configRead(CONFIG_WIFI_SSID, DEFAULT_WIFI_SSID);
-  const auto wifiPass = configRead(CONFIG_WIFI_PASSWORD, DEFAULT_WIFI_PASSWORD, true, true);
+  const auto hostname = configRead(WIFI_HOSTNAME_KEY, WIFI_HOSTNAME_FALLBACK);
+  const auto wifiSSID = configRead(WIFI_SSID_KEY, WIFI_SSID_FALLBACK);
+  const auto wifiPass = configRead(WIFI_PASSWORD_KEY, WIFI_PASSWORD_FALLBACK, true, true);
 
   Serial.printf("[WiFi] Connecting: \"%s\"\n", wifiSSID.c_str());
   WiFi.hostname(hostname);
@@ -69,20 +67,6 @@ void wifiLoop() {
   wifiConnected = connected;
 }
 
-void wifiChangeHostname(const char *hostname) {
-  if (configWrite(CONFIG_HOSTNAME, DEFAULT_HOSTNAME, hostname)) {
-    WiFi.setHostname(hostname);
-  }
-}
-
-void wifiChangeSSID(const char *ssid) {
-  configWrite(CONFIG_WIFI_SSID, DEFAULT_WIFI_SSID, ssid);
-}
-
-void wifiChangePassword(const char *password) {
-  configWrite(CONFIG_WIFI_PASSWORD, DEFAULT_WIFI_PASSWORD, password, true);
-}
-
 void wifiSetup() {
 #ifdef ESP32
   esp_log_level_set("wifi", ESP_LOG_NONE);
@@ -104,3 +88,17 @@ void wifiSetup() {
     status.set(false);
   });
 }
+
+void wifiSetHostname(const String &hostname) {
+  if (configWrite(WIFI_HOSTNAME_KEY, WIFI_HOSTNAME_FALLBACK, hostname.c_str())) {
+    WiFi.setHostname(hostname.c_str());
+  }
+}
+
+void wifiSetSSID(const String &ssid) {
+  configWrite(WIFI_SSID_KEY, WIFI_SSID_FALLBACK, ssid.c_str());
+}
+
+void wifiSetPassword(const String &password) {
+  configWrite(WIFI_PASSWORD_KEY, WIFI_PASSWORD_FALLBACK, password, true);
+}
diff --git a/src/wifi.h b/src/wifi.h
index 800ef91..642f1fe 100644
--- a/src/wifi.h
+++ b/src/wifi.h
@@ -1,14 +1,16 @@
 #ifndef WIFI_H
 #define WIFI_H
 
-void wifiChangeHostname(const char *hostname);
+#include <WString.h>
 
-void wifiChangeSSID(const char *ssid);
+void wifiSetSSID(const String &ssid);
 
-void wifiChangePassword(const char *password);
+void wifiSetPassword(const String &password);
 
 void wifiSetup();
 
 void wifiLoop();
 
+void wifiSetHostname(const String &hostname);
+
 #endif
diff --git a/upload.sh b/upload.sh
index e9c4792..684e2be 100644
--- a/upload.sh
+++ b/upload.sh
@@ -4,11 +4,9 @@ cd "$(dirname "$0")" || exit 1
 
 minify index.html | sed 's|http://10.42.0.204||g' > index.html.min || exit 2
 
-#curl -s 'http://10.42.0.204/upload/index' -F "file=@index.html.min"
-#curl -s 'http://10.42.0.204/upload/icon'  -F "file=@icon.svg"
-
+curl -s 'http://10.42.0.204/upload/index' -F "file=@index.html.min"
+curl -s 'http://10.42.0.204/upload/icon'  -F "file=@icon.svg"
 #curl -s 'http://10.0.0.178/upload/index' -F "file=@index.html.min"
 #curl -s 'http://10.0.0.178/upload/icon'  -F "file=@icon.svg"
-
-curl -s 'http://10.0.0.179/upload/index' -F "file=@index.html.min"
-curl -s 'http://10.0.0.179/upload/icon'  -F "file=@icon.svg"
+#curl -s 'http://10.0.0.179/upload/index' -F "file=@index.html.min"
+#curl -s 'http://10.0.0.179/upload/icon'  -F "file=@icon.svg"