diff --git a/docs/advanced-usage/events.md b/docs/advanced-usage/events.md
index f1dafd00..f18ae32f 100644
--- a/docs/advanced-usage/events.md
+++ b/docs/advanced-usage/events.md
@@ -38,6 +38,35 @@ void onHomieEvent(const HomieEvent& event) {
       // Do whatever you want when Wi-Fi is disconnected in normal mode
 
       // You can use event.wifiReason
+      /*
+        Wi-Fi Reason (souce: https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/examples/WiFiClientEvents/WiFiClientEvents.ino)
+        0  SYSTEM_EVENT_WIFI_READY               < ESP32 WiFi ready
+        1  SYSTEM_EVENT_SCAN_DONE                < ESP32 finish scanning AP
+        2  SYSTEM_EVENT_STA_START                < ESP32 station start
+        3  SYSTEM_EVENT_STA_STOP                 < ESP32 station stop
+        4  SYSTEM_EVENT_STA_CONNECTED            < ESP32 station connected to AP
+        5  SYSTEM_EVENT_STA_DISCONNECTED         < ESP32 station disconnected from AP
+        6  SYSTEM_EVENT_STA_AUTHMODE_CHANGE      < the auth mode of AP connected by ESP32 station changed
+        7  SYSTEM_EVENT_STA_GOT_IP               < ESP32 station got IP from connected AP
+        8  SYSTEM_EVENT_STA_LOST_IP              < ESP32 station lost IP and the IP is reset to 0
+        9  SYSTEM_EVENT_STA_WPS_ER_SUCCESS       < ESP32 station wps succeeds in enrollee mode
+        10 SYSTEM_EVENT_STA_WPS_ER_FAILED        < ESP32 station wps fails in enrollee mode
+        11 SYSTEM_EVENT_STA_WPS_ER_TIMEOUT       < ESP32 station wps timeout in enrollee mode
+        12 SYSTEM_EVENT_STA_WPS_ER_PIN           < ESP32 station wps pin code in enrollee mode
+        13 SYSTEM_EVENT_AP_START                 < ESP32 soft-AP start
+        14 SYSTEM_EVENT_AP_STOP                  < ESP32 soft-AP stop
+        15 SYSTEM_EVENT_AP_STACONNECTED          < a station connected to ESP32 soft-AP
+        16 SYSTEM_EVENT_AP_STADISCONNECTED       < a station disconnected from ESP32 soft-AP
+        17 SYSTEM_EVENT_AP_STAIPASSIGNED         < ESP32 soft-AP assign an IP to a connected station
+        18 SYSTEM_EVENT_AP_PROBEREQRECVED        < Receive probe request packet in soft-AP interface
+        19 SYSTEM_EVENT_GOT_IP6                  < ESP32 station or ap or ethernet interface v6IP addr is preferred
+        20 SYSTEM_EVENT_ETH_START                < ESP32 ethernet start
+        21 SYSTEM_EVENT_ETH_STOP                 < ESP32 ethernet stop
+        22 SYSTEM_EVENT_ETH_CONNECTED            < ESP32 ethernet phy link up
+        23 SYSTEM_EVENT_ETH_DISCONNECTED         < ESP32 ethernet phy link down
+        24 SYSTEM_EVENT_ETH_GOT_IP               < ESP32 ethernet got IP from connected AP
+        25 SYSTEM_EVENT_MAX
+      */
       break;
     case HomieEventType::MQTT_READY:
       // Do whatever you want when MQTT is connected in normal mode
@@ -46,6 +75,17 @@ void onHomieEvent(const HomieEvent& event) {
       // Do whatever you want when MQTT is disconnected in normal mode
 
       // You can use event.mqttReason
+      /*
+        MQTT Reason (source: https://github.com/marvinroger/async-mqtt-client/blob/master/src/AsyncMqttClient/DisconnectReasons.hpp)
+        0 TCP_DISCONNECTED
+        1 MQTT_UNACCEPTABLE_PROTOCOL_VERSION
+        2 MQTT_IDENTIFIER_REJECTED
+        3 MQTT_SERVER_UNAVAILABLE
+        4 MQTT_MALFORMED_CREDENTIALS
+        5 MQTT_NOT_AUTHORIZED
+        6 ESP8266_NOT_ENOUGH_SPACE
+        7 TLS_BAD_FINGERPRINT
+      */
       break;
     case HomieEventType::MQTT_PACKET_ACKNOWLEDGED:
       // Do whatever you want when an MQTT packet with QoS > 0 is acknowledged by the broker