#include <ESP8266WiFi.h>
                                      
                                      #include "WemoSwitch.h"
                                      #include "WemoManager.h"
                                      #include "CallbackFunction.h"
                                      
                                      boolean connectWifi();
                                      
                                      void lightOn();
                                      void lightOff();
                                      void secondOn();
                                      void secondOff();
                                      char ssid[] = "Wi-Fi Username";  
                                      char password[] = "Wi-Fi Password";
                                      WemoManager wemoManager;
                                      WemoSwitch *light = NULL;
                                      const int ledPin = 13;
                                      void setup()
                                      {
                                        Serial.begin(115200);
                                        WiFi.mode(WIFI_STA);
                                        WiFi.disconnect();
                                        delay(100);
                                        Serial.print("Connecting Wifi: ");
                                        Serial.println(ssid);
                                        WiFi.begin(ssid, password);
                                        while (WiFi.status() != WL_CONNECTED) {
                                          Serial.print(".");
                                          delay(500);
                                        }
                                        Serial.println("");
                                        Serial.println("WiFi connected");
                                        Serial.println("IP address: ");
                                        IPAddress ip = WiFi.localIP();
                                        Serial.println(ip);
                                        wemoManager.begin();
                                        light = new WemoSwitch("light", 80, lightOn, lightOff);
                                        wemoManager.addDevice(*light);
                                        pinMode(ledPin, OUTPUT);
                                        delay(10);
                                        digitalWrite(ledPin, HIGH);
                                      }
                                      void loop()
                                      {
                                        wemoManager.serverLoop();
                                      }
                                      void lightOn() {
                                          Serial.print("Switch 1 turn on ...");
                                          digitalWrite(ledPin, HIGH);
                                      }
                                      void lightOff() {
                                          Serial.print("Switch 1 turn off ...");
                                          digitalWrite(ledPin, LOW);
                                      }
                                      
                                  

                      
Alexa Working DEMO