diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90d547b..49f2802 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
+- Added SEN66 to sensor types
 
 ## [0.3.2] - 2024-06-19
 
diff --git a/src/SensorType.cpp b/src/SensorType.cpp
index 44ff448..efe75fa 100644
--- a/src/SensorType.cpp
+++ b/src/SensorType.cpp
@@ -32,6 +32,8 @@ const char *sensorLabel(SensorType sensorType) {
         return "SGP4X";
     case SensorType::SGP41:
         return "SGP41";
+    case SensorType::SEN66:
+        return "SEN66";
     default:
         return "UNDEFINED";
     }
diff --git a/src/SensorType.h b/src/SensorType.h
index 250cf58..5a3395e 100644
--- a/src/SensorType.h
+++ b/src/SensorType.h
@@ -19,7 +19,8 @@ enum class SensorType {
     STC3X,
     STC31,
     SGP4X,
-    SGP41
+    SGP41,
+    SEN66
 };
 
 /**