diff --git a/include/PowerMeterHttpSml.h b/include/PowerMeterHttpSml.h
index 423468eb..823a4b76 100644
--- a/include/PowerMeterHttpSml.h
+++ b/include/PowerMeterHttpSml.h
@@ -14,7 +14,8 @@
 class PowerMeterHttpSml : public PowerMeterSml {
 public:
     explicit PowerMeterHttpSml(PowerMeterHttpSmlConfig const& cfg)
-        : _cfg(cfg) { }
+        : PowerMeterSml("PowerMeterHttpSml")
+        , _cfg(cfg) { }
 
     ~PowerMeterHttpSml();
 
diff --git a/include/PowerMeterSerialSml.h b/include/PowerMeterSerialSml.h
index 58e01961..634f5994 100644
--- a/include/PowerMeterSerialSml.h
+++ b/include/PowerMeterSerialSml.h
@@ -6,6 +6,9 @@
 
 class PowerMeterSerialSml : public PowerMeterSml {
 public:
+    PowerMeterSerialSml()
+        : PowerMeterSml("PowerMeterSerialSml") { }
+
     ~PowerMeterSerialSml();
 
     bool init() final;
diff --git a/include/PowerMeterSml.h b/include/PowerMeterSml.h
index 7a599972..2e180c57 100644
--- a/include/PowerMeterSml.h
+++ b/include/PowerMeterSml.h
@@ -16,9 +16,13 @@ public:
     void doMqttPublish() const final;
 
 protected:
+    explicit PowerMeterSml(char const* user)
+        : _user(user) { }
+
     void processSmlByte(uint8_t byte);
 
 private:
+    std::string _user;
     mutable std::mutex _mutex;
 
     float _activePowerTotal = 0.0;
diff --git a/src/PowerMeterSerialSml.cpp b/src/PowerMeterSerialSml.cpp
index 5f5a64c1..e19b4067 100644
--- a/src/PowerMeterSerialSml.cpp
+++ b/src/PowerMeterSerialSml.cpp
@@ -39,5 +39,4 @@ void PowerMeterSerialSml::loop()
         processSmlByte(_upSmlSerial->read());
     }
 
-    MessageOutput.printf("[PowerMeterSerialSml]: TotalPower: %5.2f\r\n", getPowerTotal());
 }
diff --git a/src/PowerMeterSml.cpp b/src/PowerMeterSml.cpp
index 9f46fda2..105d20f9 100644
--- a/src/PowerMeterSml.cpp
+++ b/src/PowerMeterSml.cpp
@@ -37,11 +37,19 @@ void PowerMeterSml::processSmlByte(uint8_t byte)
                 handler.decoder(*handler.target);
 
                 if (_verboseLogging) {
-                    MessageOutput.printf("[PowerMeterSml] decoded %s to %.2f\r\n",
-                            handler.name, *handler.target);
+                    MessageOutput.printf("[%s] decoded %s to %.2f\r\n",
+                            _user.c_str(), handler.name, *handler.target);
                 }
             }
             break;
+        case SML_FINAL:
+            MessageOutput.printf("[%s] TotalPower: %5.2f\r\n",
+                    _user.c_str(), getPowerTotal());
+            break;
+        case SML_CHECKSUM_ERROR:
+            MessageOutput.printf("[%s] checksum verification failed\r\n",
+                    _user.c_str());
+            break;
         default:
             break;
     }