diff --git a/ESP_Kor/platformio.ini b/ESP_Kor/platformio.ini
index 2251cf7..317bc06 100644
--- a/ESP_Kor/platformio.ini
+++ b/ESP_Kor/platformio.ini
@@ -20,3 +20,4 @@ lib_deps =
   robtillaart/RunningMedian @ ^0.3.3
   ayushsharma82/WebSerial @ ^1.3.0
   ottowinter/ESPAsyncWebServer-esphome @ ^3.0.0
+  lewapek/Nova Fitness Sds dust sensors library @ ^1.5.1
diff --git a/ESP_Kor/src/main.cpp b/ESP_Kor/src/main.cpp
index 27d2bbd..9ce0f92 100644
--- a/ESP_Kor/src/main.cpp
+++ b/ESP_Kor/src/main.cpp
@@ -9,9 +9,12 @@
 #include <ESPAsyncTCP.h>
 #include <ESPAsyncWebServer.h>
 #include <WebSerial.h>
+#include <ESP8266WiFiMulti.h>
 
 #define WIFI_SSID "wf-home"
 #define WIFI_PASSWORD "0ndthnrf"
+#define WIFI_SSID2 "BR"
+#define WIFI_PASSWORD2 "499727479o"
 #define MQTT_SERV "192.168.1.111"
 #define TOPIC "home/kor/"
 
@@ -56,13 +59,17 @@ void onMqttPublish(uint16_t packetId);
 unsigned long cRun;
 unsigned long stled;
 
+ESP8266WiFiMulti wifiMulti;
 AsyncWebServer server(80);
 
 void setup()
 {
   Serial.begin(9600);
   WiFi.mode(WIFI_STA);
+  WiFi.persistent(false);
   WiFi.hostname(HOSTNAME);
+  wifiMulti.addAP(WIFI_SSID, WIFI_PASSWORD);
+  wifiMulti.addAP(WIFI_SSID2, WIFI_PASSWORD2);
 	ArduinoOTA.onStart([]() {
 		Serial.println("ArduinoOTA start");
 	});
@@ -151,28 +158,28 @@ void loop()
 
 	adc = analogRead(A0);
 	samples.add(adc);
-	adc = samples.getMedian();
+	//adc = samples.getMedian();
 
-	if ((adc <= minLight) && (move == 1)){
+	if ((samples.getMedian() <= minLight) && (move == 1)){
 		analogWrite(LAMP_OUT, LightInt);
 		if(lamp == false){
 			Serial.println("Lamp ON");
-			Serial.print("ADC: ");Serial.print(adc);
+			Serial.print("ADC: ");Serial.print(samples.getMedian());
 			Serial.print(", Move: ");Serial.println(move);
-      itoa(adc, v, 10);
+      itoa(int(samples.getMedian()), v, 10);
       mqttClient.publish(TOPIC"adc", 1, false, v);
       mqttClient.publish(TOPIC"lamp", 1, false, "1");
 			lamp = true;
 		}
 	}
-	else if((adc > (minLight + minLightDB)) || (move == 0)){
+	else if((samples.getMedian() > (minLight + minLightDB)) || (move == 0)){
 		analogWrite(LAMP_OUT, 0);
 		//curDelay = 2;
 		if(lamp == true){
 			Serial.println("Lamp OFF");
-			Serial.print("ADC: ");Serial.print(adc);
+			Serial.print("ADC: ");Serial.print(samples.getMedian());
 			Serial.print(", Move: ");Serial.println(move);
-      itoa(adc, v, 10);
+      itoa(int(samples.getMedian()), v, 10);
       mqttClient.publish(TOPIC"adc", 1, false, v);
       mqttClient.publish(TOPIC"lamp", 1, false, "0");
 			lamp = false;
@@ -188,7 +195,7 @@ void loop()
     if(cSec == 10){
       sprintf(v, "%.1f", mins);
       mqttClient.publish(TOPIC"minsmain", 1, false, v);
-      itoa(adc, v, 10);
+      itoa(int(samples.getMedian()), v, 10);
       mqttClient.publish(TOPIC"adc", 1, false, v);
       cSec = 0;
     }
@@ -202,7 +209,7 @@ void loop()
       WebSerial.print("Timer light:");
       WebSerial.print(curDelay);
       WebSerial.print(", ADC:");
-      WebSerial.println(adc);
+      WebSerial.println(int(samples.getMedian()));
     }
 
     PmResult pm = sds.readPm();
@@ -229,7 +236,8 @@ void loop()
 
 void connectToWifi() {
   Serial.println("Connecting to Wi-Fi...");
-  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+  wifiMulti.run();
+  //WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
 }
 
 void connectToMqtt() {