diff --git a/src/AgValue.cpp b/src/AgValue.cpp
index 015a788..bca9aab 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_pmFirmware     "firmware"
+
+/**
+ * @brief Get PMS5003 firmware version string
+ * 
+ * @param fwCode 
+ * @return String
+ */
+String Measurements::pms5003FirmwareVersion(int fwCode) {
+  return pms5003FirmwareVersionBase("PMS5003x", fwCode);
+}
+
+/**
+ * @brief Get PMS5003T firmware version string
+ * 
+ * @param fwCode 
+ * @return String
+ */
+String Measurements::pms5003TFirmwareVersion(int fwCode) {
+  return pms5003FirmwareVersionBase("PMS5003x", 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_pmFirmware] =
+            this->pms5003FirmwareVersion(ag->pms5003.getFirmwareVersion());
+      }
     }
 
     if (config->hasSensorSHT) {
@@ -134,6 +172,10 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
           }
         }
         root["pm02Compensated"] = ag->pms5003t_1.compensated(this->pm25_1, this->temp_1);
+        if (!localServer) {
+          root[json_prop_pmFirmware] =
+              pms5003TFirmwareVersion(ag->pms5003t_1.getFirmwareVersion());
+        }
       }
       if (config->hasSensorPMS2) {
         if(utils::isValidPMS(this->pm01_2)) {
@@ -171,6 +213,10 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
           }
         }
         root["pm02Compensated"] = ag->pms5003t_2.compensated(this->pm25_2, this->temp_2);
+        if(!localServer) {
+          root[json_prop_pmFirmware] =
+              pms5003TFirmwareVersion(ag->pms5003t_1.getFirmwareVersion());
+        }
       }
     } else {
       if (fwMode == FW_MODE_O_1P) {
@@ -208,6 +254,10 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
             }
           }
           root["pm02Compensated"] = ag->pms5003t_1.compensated(this->pm25_1, this->temp_1);
+          if(!localServer) {
+            root[json_prop_pmFirmware] =
+                pms5003TFirmwareVersion(ag->pms5003t_1.getFirmwareVersion());
+          }
         } else if (config->hasSensorPMS2) {
           if(utils::isValidPMS(this->pm01_2)) {
             root["pm01"] = this->pm01_2;
@@ -242,6 +292,10 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
             }
           }
           root["pm02Compensated"] = ag->pms5003t_1.compensated(this->pm25_1, this->temp_1);
+          if(!localServer) {
+            root[json_prop_pmFirmware] =
+                pms5003TFirmwareVersion(ag->pms5003t_2.getFirmwareVersion());
+          }
         }
       } else {
         float val;
@@ -279,6 +333,12 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
             }
           }
           root["channels"]["1"]["pm02Compensated"] = ag->pms5003t_1.compensated(this->pm25_1, this->temp_1);
+        
+          // PMS5003T version
+          if(!localServer) {
+            root["channels"]["1"][json_prop_pmFirmware] =
+                pms5003TFirmwareVersion(ag->pms5003t_1.getFirmwareVersion());
+          }
         }
         if (config->hasSensorPMS2) {
           float val;
@@ -315,6 +375,11 @@ String Measurements::toString(bool localServer, AgFirmwareMode fwMode, int rssi,
             }
           }
           root["channels"]["2"]["pm02Compensated"] = ag->pms5003t_2.compensated(this->pm25_2, this->temp_2);
+          // PMS5003T version
+          if(!localServer) {
+            root["channels"]["2"][json_prop_pmFirmware] =
+                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 1d1ad1c..842a0a3 100644
--- a/src/PMS/PMS.cpp
+++ b/src/PMS/PMS.cpp
@@ -267,6 +267,20 @@ int16_t PMSBase::getTemp(void) { return toI16(&package[24]); }
  */
 uint16_t PMSBase::getHum(void) { return toU16(&package[26]); }
 
+/**
+ * @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 96057d5..eee0e9b 100644
--- a/src/PMS/PMS.h
+++ b/src/PMS/PMS.h
@@ -32,6 +32,8 @@ public:
   /** For PMS5003T*/
   int16_t getTemp(void);
   uint16_t getHum(void);
+  uint8_t getFirmwareVersion(void); 
+  uint8_t getErrorCode(void);
 
   int pm25ToAQI(int pm02);
   int compensated(int pm25, float humidity);
diff --git a/src/PMS/PMS5003.cpp b/src/PMS/PMS5003.cpp
index 73dd569..e1ec896 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;
 }
@@ -132,6 +132,20 @@ int PMS5003::compensated(int pm25, float humidity) {
   return pms.compensated(pm25, humidity);
 }
 
+/**
+ * @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 8be8e8f..148819e 100644
--- a/src/PMS/PMS5003.h
+++ b/src/PMS/PMS5003.h
@@ -29,9 +29,12 @@ public:
   int getPm03ParticleCount(void);
   int convertPm25ToUsAqi(int pm25);
   int compensated(int pm25, float humidity);
+  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 8493504..8706ae0 100644
--- a/src/PMS/PMS5003T.cpp
+++ b/src/PMS/PMS5003T.cpp
@@ -103,7 +103,7 @@ bool PMS5003T::begin(void) {
     return false;
   }
 #endif
-
+  _ver = pms.getFirmwareVersion();
   this->_isBegin = true;
   return true;
 }
@@ -175,6 +175,20 @@ float PMS5003T::compensated(int pm25, float humidity) {
   return pms.compensated(pm25, humidity);
 }
 
+/**
+ * @brief Get module(s) firmware version
+ * 
+ * @return int Version code
+ */
+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 f3d58e7..93e2fdd 100644
--- a/src/PMS/PMS5003T.h
+++ b/src/PMS/PMS5003T.h
@@ -34,10 +34,13 @@ public:
   float getTemperature(void);
   float getRelativeHumidity(void);
   float compensated(int pm25, float humidity);
+  int getFirmwareVersion(void);
+  uint8_t getErrorCode(void);
 
 private:
   bool _isBegin = false;
   bool _isSleep = false;
+  int _ver;   /** Firmware version code */
 
   BoardType _boardDef;
   const BoardDef *bsp;