diff --git a/src/app.cpp b/src/app.cpp
index 7f2fefd7..001b18f6 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -84,7 +84,7 @@ void app::setup() {
 
     mPubSerial.setup(mConfig, &mSys, &mTimestamp);
 
-    mImprov.setup(mConfig->sys.deviceName, mVersion);
+    mImprov.setup(this, mConfig->sys.deviceName, mVersion);
 
     regularTickers();
 
diff --git a/src/app.h b/src/app.h
index 010758c4..9a73ddcd 100644
--- a/src/app.h
+++ b/src/app.h
@@ -101,8 +101,8 @@ class app : public IApp, public ah::Scheduler {
             mWifi.scanAvailNetworks();
         }
 
-        void getAvailNetworks(JsonObject obj) {
-            mWifi.getAvailNetworks(obj);
+        bool getAvailNetworks(JsonObject obj) {
+            return mWifi.getAvailNetworks(obj);
         }
 
         void setOnUpdate() {
diff --git a/src/appInterface.h b/src/appInterface.h
index 44491d91..a3240189 100644
--- a/src/appInterface.h
+++ b/src/appInterface.h
@@ -25,7 +25,7 @@ class IApp {
         virtual const char *getVersion() = 0;
         virtual statistics_t *getStatistics() = 0;
         virtual void scanAvailNetworks() = 0;
-        virtual void getAvailNetworks(JsonObject obj) = 0;
+        virtual bool getAvailNetworks(JsonObject obj) = 0;
 
         virtual uint32_t getUptime() = 0;
         virtual uint32_t getTimestamp() = 0;
diff --git a/src/utils/dbg.cpp b/src/utils/dbg.cpp
index 9f7c9fd3..e7ae4581 100644
--- a/src/utils/dbg.cpp
+++ b/src/utils/dbg.cpp
@@ -1,3 +1,4 @@
 #include "dbg.h"
 
 DBG_CB mCb = NULL;
+bool mDebugEn = true;
diff --git a/src/utils/dbg.h b/src/utils/dbg.h
index 53c9f79e..8ce23db9 100644
--- a/src/utils/dbg.h
+++ b/src/utils/dbg.h
@@ -39,6 +39,7 @@
     #ifdef ARDUINO
         #define DBG_CB std::function<void(String)>
         extern DBG_CB mCb;
+        extern bool mDebugEn;
 
         inline void registerDebugCb(DBG_CB cb) {
             mCb = cb;
@@ -48,12 +49,16 @@
             #define DSERIAL Serial
         #endif
 
+        inline void setDebugEn(bool en) {
+            mDebugEn = en;
+        }
+
         //template <class T>
-        inline void DBGPRINT(String str, bool ser = true) { if(ser) DSERIAL.print(str); if(NULL != mCb) mCb(str); }
+        inline void DBGPRINT(String str, bool ser = true) { if(ser && mDebugEn) DSERIAL.print(str); if(NULL != mCb) mCb(str); }
         //template <class T>
         inline void DBGPRINTLN(String str, bool ser = true) { DBGPRINT(str); DBGPRINT(F("\r\n")); }
         inline void DHEX(uint8_t b, bool ser = true) {
-            if(ser) {
+            if(ser && mDebugEn) {
                 if( b<0x10 ) DSERIAL.print(F("0"));
                 DSERIAL.print(b,HEX);
             }
diff --git a/src/utils/improv.h b/src/utils/improv.h
index c3b8c87c..ade1291e 100644
--- a/src/utils/improv.h
+++ b/src/utils/improv.h
@@ -9,6 +9,7 @@
 #include <cstring>
 #include <functional>
 #include "dbg.h"
+#include "AsyncJson.h"
 
 // https://www.improv-wifi.com/serial/
 // https://github.com/jnthas/improv-wifi-demo/blob/main/src/esp32-wifiimprov/esp32-wifiimprov.ino
@@ -16,12 +17,18 @@
 // configure ESP through Serial interface
 class Improv {
     public:
-        void setup(const char *devName, const char *version) {
+        void setup(IApp *app, const char *devName, const char *version) {
+            mApp     = app;
             mDevName = devName;
             mVersion = version;
+
+            mScanRunning = false;
         }
 
         void tickSerial(void) {
+            if(mScanRunning)
+                getNetworks();
+
             if(Serial.available() == 0)
                 return;
 
@@ -114,7 +121,7 @@ class Improv {
         }
 
         void sendDevInfo(void) {
-            uint8_t buf[100];
+            uint8_t buf[50];
             buf[7] = TYPE_RPC_RESPONSE;
             buf[9] = GET_DEVICE_INFO; // repsonse to cmd
             uint8_t p = 11;
@@ -137,6 +144,37 @@ class Improv {
             sendPaket(buf, p);
         }
 
+        void getNetworks(void) {
+            if(!mScanRunning)
+                mApp->scanAvailNetworks();
+
+            JsonObject obj;
+            if(!mApp->getAvailNetworks(obj))
+                return;
+
+            mScanRunning = false;
+
+            uint8_t buf[50];
+            buf[7] = TYPE_RPC_RESPONSE;
+            buf[9] = GET_WIFI_NETWORKS; // repsonse to cmd
+            uint8_t p = 11;
+
+            JsonArray arr = obj[F("networks")];
+            for(uint8_t i = 0; i < arr.size(); i++) {
+                buf[p++] = strlen(arr[i][F("ssid")]);
+                // ssid
+                p += char2Improv(arr[i][F("ssid")], &buf[p]);
+                buf[p++] = String(arr[i][F("rssi")]).length();
+                // rssi
+                p += char2Improv(String(arr[i][F("rssi")]).c_str(), &buf[p]);
+
+                buf[10] = p - 11; // sub length
+                buf[8] = p - 9; // paket length
+
+                sendPaket(buf, p);
+            }
+        }
+
         void setState(uint8_t state) {
             uint8_t buf[20];
             buf[7] = TYPE_CURRENT_STATE;
@@ -162,14 +200,20 @@ class Improv {
 
         void parsePayload(uint8_t type, uint8_t buf[], uint8_t len) {
             if(TYPE_RPC == type) {
-                if(GET_CURRENT_STATE == buf[0])
+                if(GET_CURRENT_STATE == buf[0]) {
+                    setDebugEn(false);
                     setState(STATE_AUTHORIZED);
+                }
                 else if(GET_DEVICE_INFO == buf[0])
                     sendDevInfo();
+                else if(GET_WIFI_NETWORKS == buf[0])
+                    getNetworks();
             }
         }
 
+        IApp *mApp;
         const char *mDevName, *mVersion;
+        bool mScanRunning;
 };
 
 #endif /*__IMPROV_H__*/
diff --git a/src/wifi/ahoywifi.cpp b/src/wifi/ahoywifi.cpp
index 08c19070..f590f67e 100644
--- a/src/wifi/ahoywifi.cpp
+++ b/src/wifi/ahoywifi.cpp
@@ -274,12 +274,12 @@ void ahoywifi::scanAvailNetworks(void) {
 }
 
 //-----------------------------------------------------------------------------
-void ahoywifi::getAvailNetworks(JsonObject obj) {
+bool ahoywifi::getAvailNetworks(JsonObject obj) {
     JsonArray nets = obj.createNestedArray("networks");
 
     int n = WiFi.scanComplete();
     if (n < 0)
-        return;
+        return false;
     if(n > 0) {
         int sort[n];
         sortRSSI(&sort[0], n);
@@ -292,6 +292,8 @@ void ahoywifi::getAvailNetworks(JsonObject obj) {
     WiFi.scanDelete();
     if(mStaConn == IN_AP_MODE)
         WiFi.mode(WIFI_AP);
+
+    return true;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/src/wifi/ahoywifi.h b/src/wifi/ahoywifi.h
index 3a3a35a8..3fde2ab3 100644
--- a/src/wifi/ahoywifi.h
+++ b/src/wifi/ahoywifi.h
@@ -27,7 +27,7 @@ class ahoywifi {
         void tickWifiLoop(void);
         bool getNtpTime(void);
         void scanAvailNetworks(void);
-        void getAvailNetworks(JsonObject obj);
+        bool getAvailNetworks(JsonObject obj);
 
     private:
         typedef enum WiFiStatus {