diff --git a/README.md b/README.md
index 46f6746..0da2d7c 100644
--- a/README.md
+++ b/README.md
@@ -95,6 +95,14 @@ Therefore, to add Wi-Fi connectivity, we just need to also listen to the TX of t
 The Ikea uC will do all that polling stuff for us.
 
 As reported in #16, the transitions from Green to Yellow and Yellow to Red in the Ikea firmware are at around 30 and 100μg/m³.
+| Color        | Value           | Comment  |
+|:------------- |:-------------:|:-----|
+| Green      | 0-35 | Good + Low |
+| Amber      | 36-85 | Ok + Medium |
+| Red      | 86- | Not good + High |
+| Pulsing      | --- | Startup mode for 10 seconds|
+
+Info from (https://www.ikea.com/us/en/manuals/vindriktning-air-quality-sensor__AA-2289325-1_pub.pdf):
 
 ## ToDo
 
diff --git a/src/Config.h b/src/Config.h
index 4904b11..1e4d347 100644
--- a/src/Config.h
+++ b/src/Config.h
@@ -8,12 +8,14 @@ namespace Config {
 
     char username[24] = "";
     char password[24] = "";
+    char mqtt_anonymous[2] = "";
 
     void save() {
         DynamicJsonDocument json(512);
         json["mqtt_server"] = mqtt_server;
         json["username"] = username;
         json["password"] = password;
+        json["mqtt_anonymous"] = mqtt_anonymous;
 
         File configFile = SPIFFS.open("/config.json", "w");
         if (!configFile) {
@@ -41,6 +43,7 @@ namespace Config {
                         strcpy(mqtt_server, json["mqtt_server"]);
                         strcpy(username, json["username"]);
                         strcpy(password, json["password"]);
+                        strcpy(mqtt_anonymous, json["mqtt_anonymous"]);
                     }
                 }
             }
diff --git a/src/esp8266-vindriktning-particle-sensor.ino b/src/esp8266-vindriktning-particle-sensor.ino
index 0265ac2..8173699 100644
--- a/src/esp8266-vindriktning-particle-sensor.ino
+++ b/src/esp8266-vindriktning-particle-sensor.ino
@@ -18,9 +18,12 @@ WiFiManager wifiManager;
 WiFiClient wifiClient;
 PubSubClient mqttClient;
 
+WiFiManagerParameter p_lineBreak_text_title("<p>MQTT Server Config:</p>");
 WiFiManagerParameter custom_mqtt_server("server", "mqtt server", Config::mqtt_server, sizeof(Config::mqtt_server));
 WiFiManagerParameter custom_mqtt_user("user", "MQTT username", Config::username, sizeof(Config::username));
 WiFiManagerParameter custom_mqtt_pass("pass", "MQTT password", Config::password, sizeof(Config::password));
+WiFiManagerParameter p_lineBreak_text_mqtt_anonymous("<p>MQTT Anonymous? (bypass user/pass):</p>");
+WiFiManagerParameter custom_mqtt_anonymous("mqtt_anónymous", "MQTT anonymous", "T", 2, "type=\"checkbox\""); 
 
 uint32_t lastMqttConnectionAttempt = 0;
 const uint16_t mqttConnectionInterval = 60000; // 1 minute = 60 seconds = 60000 milliseconds
@@ -141,9 +144,12 @@ void setupWifi() {
     wifiManager.setDebugOutput(false);
     wifiManager.setSaveConfigCallback(saveConfigCallback);
 
+    wifiManager.addParameter(&p_lineBreak_text_title);
     wifiManager.addParameter(&custom_mqtt_server);
     wifiManager.addParameter(&custom_mqtt_user);
     wifiManager.addParameter(&custom_mqtt_pass);
+    wifiManager.addParameter(&p_lineBreak_text_mqtt_anonymous);
+    wifiManager.addParameter(&custom_mqtt_anonymous);
 
     WiFi.hostname(identifier);
     wifiManager.autoConnect(identifier);
@@ -152,6 +158,7 @@ void setupWifi() {
     strcpy(Config::mqtt_server, custom_mqtt_server.getValue());
     strcpy(Config::username, custom_mqtt_user.getValue());
     strcpy(Config::password, custom_mqtt_pass.getValue());
+    strcpy(Config::mqtt_anonymous, custom_mqtt_anonymous.getValue());
 
     if (shouldSaveConfig) {
         Config::save();
@@ -171,13 +178,24 @@ void resetWifiSettingsAndReboot() {
 
 void mqttReconnect() {
     for (uint8_t attempt = 0; attempt < 3; ++attempt) {
-        if (mqttClient.connect(identifier, Config::username, Config::password, MQTT_TOPIC_AVAILABILITY, 1, true, AVAILABILITY_OFFLINE)) {
+        if (strcmp(Config::mqtt_anonymous, "T") == 0) {
+          if (mqttClient.connect(identifier, MQTT_TOPIC_AVAILABILITY, 1, true, AVAILABILITY_OFFLINE)) {
             mqttClient.publish(MQTT_TOPIC_AVAILABILITY, AVAILABILITY_ONLINE, true);
             publishAutoConfig();
 
             // Make sure to subscribe after polling the status so that we never execute commands with the default data
             mqttClient.subscribe(MQTT_TOPIC_COMMAND);
             break;
+      	  }
+        } else{
+          if (mqttClient.connect(identifier, Config::username, Config::password, MQTT_TOPIC_AVAILABILITY, 1, true, AVAILABILITY_OFFLINE)) {
+              mqttClient.publish(MQTT_TOPIC_AVAILABILITY, AVAILABILITY_ONLINE, true);
+              publishAutoConfig();
+
+              // Make sure to subscribe after polling the status so that we never execute commands with the default data
+              mqttClient.subscribe(MQTT_TOPIC_COMMAND);
+              break;
+          }
         }
         delay(5000);
     }