diff --git a/src/AgValue.cpp b/src/AgValue.cpp
index 02a1590..e66c8b4 100644
--- a/src/AgValue.cpp
+++ b/src/AgValue.cpp
@@ -4,6 +4,39 @@
 #include "Main/utils.h"
 #include "Libraries/Arduino_JSON/src/Arduino_JSON.h"
 
+#define json_prop_pmsFirmware     "pmsFirmware"
+
+/**
+ * @brief Get PMS5003 firmware version string
+ * 
+ * @param fwCode 
+ * @return String
+ */
+String Measurements::pms5003FirmwareVersion(int fwCode) {
+  return pms5003FirmwareVersionBase("PMS5003", fwCode);
+}
+
+/**
+ * @brief Get PMS5003T firmware version string
+ * 
+ * @param fwCode 
+ * @return String
+ */
+String Measurements::pms5003TFirmwareVersion(int fwCode) {
+  return pms5003FirmwareVersionBase("PMS5003T", fwCode);
+}
+
+/**
+ * @brief Get firmware version string
+ * 
+ * @param prefix Prefix firmware string
+ * @param fwCode Version code
+ * @return string 
+ */
+String Measurements::pms5003FirmwareVersionBase(String prefix, int fwCode) {
+  return prefix + String("-") + String(fwCode);
+}
+
 String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
                               void *_ag, void *_config) {
   AirGradient *ag = (AirGradient *)_ag;
@@ -33,6 +66,11 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
       if (utils::isValidPMS03Count(this->pm03PCount_1)) {
         root["pm003Count"] = this->pm03PCount_1;
       }
+      if (!localServer) {
+
+        root[json_prop_pmsFirmware] =
+            this->pms5003FirmwareVersion(ag->pms5003.getFirmwareVersion());
+      }
     }
 
     if (config->hasSensorSHT) {
@@ -122,7 +160,8 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
           }
         }
         if (!localServer) {
-          root["PMS5003T_FwVer"] = ag->pms5003t_1.getFirmwareVersion();
+          root[json_prop_pmsFirmware] =
+              pms5003TFirmwareVersion(ag->pms5003t_1.getFirmwareVersion());
         }
       }
       if (config->hasSensorPMS2) {
@@ -161,7 +200,8 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
           }
         }
         if(!localServer) {
-          root["PMS5003T_FwVer"] = ag->pms5003t_1.getFirmwareVersion();
+          root[json_prop_pmsFirmware] =
+              pms5003TFirmwareVersion(ag->pms5003t_1.getFirmwareVersion());
         }
       }
     } else {
@@ -200,7 +240,8 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
             }
           }
           if(!localServer) {
-            root["PMS5003T_FwVer"] = ag->pms5003t_1.getFirmwareVersion();
+            root[json_prop_pmsFirmware] =
+                pms5003TFirmwareVersion(ag->pms5003t_1.getFirmwareVersion());
           }
         } else if (config->hasSensorPMS2) {
           if(utils::isValidPMS(this->pm01_2)) {
@@ -236,7 +277,8 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
             }
           }
           if(!localServer) {
-            root["PMS5003T_FwVer"] = ag->pms5003t_2.getFirmwareVersion();
+            root[json_prop_pmsFirmware] =
+                pms5003TFirmwareVersion(ag->pms5003t_2.getFirmwareVersion());
           }
         }
       } else {
@@ -277,7 +319,8 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
         
           // PMS5003T version
           if(!localServer) {
-            root["channels"]["1"]["PMS5003T_FwVer"] = ag->pms5003t_1.getFirmwareVersion();
+            root["channels"]["1"][json_prop_pmsFirmware] =
+                pms5003TFirmwareVersion(ag->pms5003t_1.getFirmwareVersion());
           }
         }
         if (config->hasSensorPMS2) {
@@ -316,7 +359,8 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
           }
           // PMS5003T version
           if(!localServer) {
-            root["channels"]["2"]["PMS5003T_FwVer"] = ag->pms5003t_2.getFirmwareVersion();
+            root["channels"]["2"][json_prop_pmsFirmware] =
+                pms5003TFirmwareVersion(ag->pms5003t_2.getFirmwareVersion());
           }
         }
       }
diff --git a/src/AgValue.h b/src/AgValue.h
index 3176482..1957828 100644
--- a/src/AgValue.h
+++ b/src/AgValue.h
@@ -6,6 +6,9 @@
 
 class Measurements {
 private:
+  String pms5003FirmwareVersion(int fwCode);
+  String pms5003TFirmwareVersion(int fwCode);
+  String pms5003FirmwareVersionBase(String prefix, int fwCode);
 public:
   Measurements() {
     pm25_1 = -1;
diff --git a/src/PMS/PMS.cpp b/src/PMS/PMS.cpp
index 8d7c957..dcb516a 100644
--- a/src/PMS/PMS.cpp
+++ b/src/PMS/PMS.cpp
@@ -246,12 +246,19 @@ uint16_t PMSBase::getTemp(void) { return toValue(&package[24]); }
 uint16_t PMSBase::getHum(void) { return toValue(&package[26]); }
 
 /**
- * @brief Get PMS500T firmware version code
+ * @brief Get firmware version code
  * 
  * @return uint8_t 
  */
 uint8_t PMSBase::getFirmwareVersion(void) { return package[28]; }
 
+/**
+ * @brief Ge PMS5003 error code
+ * 
+ * @return uint8_t 
+ */
+uint8_t PMSBase::getErrorCode(void) { return package[29]; }
+
 /**
  * @brief Convert PMS2.5 to US AQI unit
  *
diff --git a/src/PMS/PMS.h b/src/PMS/PMS.h
index 6131390..38bdb45 100644
--- a/src/PMS/PMS.h
+++ b/src/PMS/PMS.h
@@ -27,6 +27,7 @@ public:
   uint16_t getTemp(void);
   uint16_t getHum(void);
   uint8_t getFirmwareVersion(void); 
+  uint8_t getErrorCode(void);
 
   int pm25ToAQI(int pm02);
 
diff --git a/src/PMS/PMS5003.cpp b/src/PMS/PMS5003.cpp
index 0c1ea83..7325240 100644
--- a/src/PMS/PMS5003.cpp
+++ b/src/PMS/PMS5003.cpp
@@ -78,7 +78,7 @@ bool PMS5003::begin(void) {
     return false;
   }
 #endif
-
+  _ver = pms.getFirmwareVersion();
   this->_isBegin = true;
   return true;
 }
@@ -121,6 +121,20 @@ int PMS5003::getPm03ParticleCount(void) {
  */
 int PMS5003::convertPm25ToUsAqi(int pm25) { return pms.pm25ToAQI(pm25); }
 
+/**
+ * @brief Get sensor firmware version
+ * 
+ * @return int
+ */
+int PMS5003::getFirmwareVersion(void) { return _ver; }
+
+/**
+ * @brief Get sensor error code
+ * 
+ * @return uint8_t 
+ */
+uint8_t PMS5003::getErrorCode(void) { return pms.getErrorCode(); }
+
 /**
  * @brief Check device initialized or not
  *
diff --git a/src/PMS/PMS5003.h b/src/PMS/PMS5003.h
index cd66b07..3ed63aa 100644
--- a/src/PMS/PMS5003.h
+++ b/src/PMS/PMS5003.h
@@ -24,9 +24,12 @@ public:
   int getPm10Ae(void);
   int getPm03ParticleCount(void);
   int convertPm25ToUsAqi(int pm25);
+  int getFirmwareVersion(void);
+  uint8_t getErrorCode(void);
 
 private:
   bool _isBegin = false;
+  int _ver;
   BoardType _boardDef;
   PMSBase pms;
   const BoardDef *bsp;
diff --git a/src/PMS/PMS5003T.cpp b/src/PMS/PMS5003T.cpp
index 7ea6d74..1f48ebd 100644
--- a/src/PMS/PMS5003T.cpp
+++ b/src/PMS/PMS5003T.cpp
@@ -171,6 +171,13 @@ float PMS5003T::getRelativeHumidity(void) {
  */
 int PMS5003T::getFirmwareVersion(void) { return _ver; }
 
+/**
+ * @brief Get sensor error code
+ * 
+ * @return uint8_t 
+ */
+uint8_t PMS5003T::getErrorCode(void) { return pms.getErrorCode(); }
+
 /**
  * @brief Check device initialized or not
  *
diff --git a/src/PMS/PMS5003T.h b/src/PMS/PMS5003T.h
index 821d946..0a0b1dc 100644
--- a/src/PMS/PMS5003T.h
+++ b/src/PMS/PMS5003T.h
@@ -30,6 +30,7 @@ public:
   float getTemperature(void);
   float getRelativeHumidity(void);
   int getFirmwareVersion(void);
+  uint8_t getErrorCode(void);
 
 private:
   bool _isBegin = false;