diff --git a/.github/workflows/arduino_quality_check.yml b/.github/workflows/arduino_quality_check.yml
index a8b92d4..a2dc17c 100644
--- a/.github/workflows/arduino_quality_check.yml
+++ b/.github/workflows/arduino_quality_check.yml
@@ -13,7 +13,7 @@ jobs:
     uses: sensirion/.github/.github/workflows/driver.arduino.check.yml@main
     with:
       expect-arduino-examples: true
-      lint-lib-manager-check: submit
+      lint-lib-manager-check: update
 
   todo-check:
     if: github.event_name == 'push' && github.ref != 'refs/head/main'
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..1610d88
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,103 @@
+stages:
+  - validate
+  - test
+
+variables:
+  YQ_URL: https://github.com/mikefarah/yq/releases/download/v4.33.3/yq_linux_amd64
+
+compile_test:
+    stage: test
+    image:
+        name: registry.gitlab.sensirion.lokal/sensirion/docker/docker-arduino:0.4.0
+    tags: [docker, linux]
+    before_script:
+        - rm -rf ../sensirion-core-arduino-library
+    script:
+        - git clone --depth 1 --branch 0.7.0 https://github.com/Sensirion/arduino-core.git ../sensirion-core-arduino-library
+        - arduino-cli compile --libraries=".." --warnings all --fqbn arduino:samd:mkrzero ./examples/exampleUsage/exampleUsage.ino
+        - arduino-cli compile --libraries=".." --warnings all --fqbn arduino:avr:mega ./examples/exampleUsage/exampleUsage.ino
+        - arduino-cli compile --libraries=".." --warnings all --fqbn arduino:avr:nano ./examples/exampleUsage/exampleUsage.ino
+        - arduino-cli compile --libraries=".." --warnings all --fqbn arduino:avr:uno ./examples/exampleUsage/exampleUsage.ino
+        - arduino-cli compile --libraries=".." --warnings all --fqbn esp32:esp32:esp32 ./examples/exampleUsage/exampleUsage.ino
+        - arduino-cli compile --libraries=".." --warnings all --fqbn esp8266:esp8266:generic ./examples/exampleUsage/exampleUsage.ino
+
+arduino_lint:
+  stage: validate
+  image:
+    name: registry.gitlab.sensirion.lokal/mso-sw/drivers/docker-driver-generator:0.2.0
+  tags: [linux, docker]
+  script:
+    - mkdir ~/arlint
+    - PATH=~/arlint:$PATH
+    - curl -fsSL https://raw.githubusercontent.com/arduino/arduino-lint/main/etc/install.sh | BINDIR=~/arlint sh
+    - arduino-lint --library-manager false
+
+syntax_check:
+  stage: validate
+  image:
+      name: registry.gitlab.sensirion.lokal/mso-sw/drivers/docker-driver-generator:0.2.0
+  tags: [linux, docker]
+  script:
+    - find . -type f -iregex ".*\.\(c\|h\|cpp\|ino\)" -exec clang-format-6.0 -i -style=file {} \; && git diff --exit-code
+
+
+cppcheck:
+  stage: validate
+  image:
+      name: registry.gitlab.sensirion.lokal/mso-sw/drivers/docker-driver-generator:0.2.0
+  tags: [linux, docker]
+  script:
+    - cppcheck --std=c++11 --language=c++ --error-exitcode=1 --enable=warning,style,performance,portability --suppress=unreadVariable --suppress=unusedStructMember src/*
+
+TODO_check:
+  stage: validate
+  image:
+      name: registry.gitlab.sensirion.lokal/mso-sw/drivers/docker-driver-generator:0.2.0
+  tags: [linux, docker]
+  script:
+    - '! grep -rnw --exclude=.gitlab-ci.yml --exclude-dir=.git . -e "TODO"'
+
+metadata_check:
+  stage: validate
+  image:
+    name: registry.gitlab.sensirion.lokal/mso-sw/drivers/docker-driver-generator:0.2.0
+  tags: [linux, docker]
+  before_script:
+    - apt-get -qq update && apt-get -qq install -y wget
+    - if ! [ -d downloads/ ]; then mkdir downloads; fi
+    - if ! [ -e downloads/yq ]; then wget --no-verbose $YQ_URL -O downloads/yq; fi
+    - cp downloads/yq /usr/local/bin/yq && chmod +x /usr/local/bin/yq
+  script:
+    # check if metadata.yml exists
+    - >
+      if ! [ -f "metadata.yml" ]; then
+        echo "metadata.yml file not found"
+        exit 1
+      fi
+    # check that dg_status is 'released'
+    - export DG_STATUS=$(yq ".dg_status.[]" ./metadata.yml)
+    - >
+      if [ $DG_STATUS != "released" ]; then
+        echo "dg_status in metadata.yml has to be 'released', not '$DG_STATUS'"
+        exit 1
+      fi
+    # check that last_generated is not older than timestamp of last non-merge commit (+ 3 minutes)
+    - export IS_MANUALLY_MODIFIED=$(yq ".is_manually_modified" ./metadata.yml)
+    - >
+      if [ $IS_MANUALLY_MODIFIED = false ]; then
+        export LAST_GENERATED_TS=$(yq ".last_generated" ./metadata.yml)
+        export LAST_GENERATED_TS_EPOCH=$(date -d "$LAST_GENERATED_TS" +%s)
+        export LAST_NON_MERGE_COMMIT_TS=$(git log --format=%ad --date=iso-strict --no-merges -1)
+        export COMMIT_TS_EPOCH=$(date -d "$LAST_NON_MERGE_COMMIT_TS" +%s)
+        if [ $(($LAST_GENERATED_TS_EPOCH + 180)) -lt $COMMIT_TS_EPOCH  ]; then
+          echo "'last_generated' timestamp in metadata.yml is older than commit timestamp ($LAST_GENERATED_TS vs $LAST_NON_MERGE_COMMIT_TS)"
+          exit 1
+        fi
+      fi
+    # check that 'is_manually_modified' is set to true if commit is not from driver generator
+    - export LAST_NON_MERGE_COMMIT_AUTHOR=$(git log --format=%an --no-merges -1)
+    - >
+      if ! [ "$LAST_NON_MERGE_COMMIT_AUTHOR" = "Driver Generator 2" ] && [ "$IS_MANUALLY_MODIFIED" = false ]; then
+        echo "Last commit is not from Driver Generator. Please update 'is_manually_modified' in metadata.yml"
+        exit 1
+      fi
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0a15ca..c621661 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased] 
 
+## [1.0.1] - 2024-12-1
+
+### Fixed
+
+- Fix naming from mass concentration to number concentration for read number concentration method (returned values were correct).
 ## [1.0.0] - 2024-11-25
 
 ### Added
@@ -21,6 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add interfaces to start, stop and read measurements.
 - Add interfaces to read product name, serial number and version
 
-[Unreleased]: https://github.com/Sensirion/arduino-i2c-sen66/compare/1.0.0...HEAD
+[Unreleased]: https://github.com/Sensirion/arduino-i2c-sen66/compare/1.0.1...HEAD
+[1.0.1]: https://github.com/Sensirion/arduino-i2c-sen66/compare/1.0.0...1.0.1
 [1.0.0]: https://github.com/Sensirion/arduino-i2c-sen66/compare/0.1.0...1.0.0
 [0.1.0]: https://github.com/Sensirion/arduino-i2c-sen66/releases/tag/0.1.0
\ No newline at end of file
diff --git a/README.md b/README.md
index a63f38c..2be985e 100644
--- a/README.md
+++ b/README.md
@@ -43,12 +43,12 @@ Use the following pin description to connect your SEN66 to the standard I²C bus
 
 | *Pin* | *Cable Color* | *Name* | *Description*  | *Comments* |
 |-------|---------------|:------:|----------------|------------|
-| 1 | red | VDD | Supply Voltage | 3.3V ±10%
+| 1 | red | VDD | Supply Voltage | 3.3V ±5%
 | 2 | black | GND | Ground |
 | 3 | green | SDA | I2C: Serial data input / output | TTL 5V compatible
 | 4 | yellow | SCL | I2C: Serial clock input | TTL 5V compatible
-| 5 |  | NC | Do not connect |
-| 6 |  | NC | Do not connect |
+| 5 |  | GND | Ground | Do not connect (Pins 2 and 5 are connected internally)
+| 6 |  | VDD | Supply Voltage | Do not connect (Pins 1 and 6 are connected internally)
 
 
 
@@ -69,6 +69,8 @@ You will find pinout schematics for recommended board models below:
 | GND | 2 | black | GND |
 | SDA | 3 | green | D18/SDA |
 | SCL | 4 | yellow | D19/SCL |
+| GND | 5 |  | GND |
+| VDD | 6 |  | 3.3V |
 
 
 
@@ -88,6 +90,8 @@ You will find pinout schematics for recommended board models below:
 | GND | 2 | black | GND |
 | SDA | 3 | green | A4 |
 | SCL | 4 | yellow | A5 |
+| GND | 5 |  | GND |
+| VDD | 6 |  | 3.3V |
 
 
 
@@ -107,6 +111,8 @@ You will find pinout schematics for recommended board models below:
 | GND | 2 | black | GND |
 | SDA | 3 | green | D2/SDA |
 | SCL | 4 | yellow | ~D3/SCL |
+| GND | 5 |  | GND |
+| VDD | 6 |  | 3.3V |
 
 
 
@@ -126,6 +132,8 @@ You will find pinout schematics for recommended board models below:
 | GND | 2 | black | GND |
 | SDA | 3 | green | D20/SDA |
 | SCL | 4 | yellow | D21/SCL |
+| GND | 5 |  | GND |
+| VDD | 6 |  | 3.3V |
 
 
 
@@ -145,6 +153,8 @@ You will find pinout schematics for recommended board models below:
 | GND | 2 | black | GND |
 | SDA | 3 | green | GPIO 21 |
 | SCL | 4 | yellow | GPIO 22 |
+| GND | 5 |  | GND |
+| VDD | 6 |  | 3V3 |
 
 
 
diff --git a/examples/exampleUsage/exampleUsage.ino b/examples/exampleUsage/exampleUsage.ino
index 1220390..24fa33c 100644
--- a/examples/exampleUsage/exampleUsage.ino
+++ b/examples/exampleUsage/exampleUsage.ino
@@ -3,7 +3,7 @@
  *
  * Generator:     sensirion-driver-generator 1.0.1
  * Product:       sen66
- * Model-Version: 1.3.0
+ * Model-Version: 1.3.1
  */
 /*
  * Copyright (c) 2024, Sensirion AG
diff --git a/keywords.txt b/keywords.txt
index a89e74d..5b28fe4 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -42,11 +42,15 @@ getSerialNumber	KEYWORD2
 readDeviceStatus	KEYWORD2
 readAndClearDeviceStatus	KEYWORD2
 deviceReset	KEYWORD2
-signalMassConcentrationPm0p5	KEYWORD2
 signalMassConcentrationPm1p0	KEYWORD2
 signalMassConcentrationPm2p5	KEYWORD2
 signalMassConcentrationPm4p0	KEYWORD2
 signalMassConcentrationPm10p0	KEYWORD2
+signalNumberConcentrationPm0p5	KEYWORD2
+signalNumberConcentrationPm1p0	KEYWORD2
+signalNumberConcentrationPm2p5	KEYWORD2
+signalNumberConcentrationPm4p0	KEYWORD2
+signalNumberConcentrationPm10p0	KEYWORD2
 signalTemperature	KEYWORD2
 signalHumidity	KEYWORD2
 signalVocIndex	KEYWORD2
diff --git a/library.properties b/library.properties
index 8c18059..4c065b6 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=Sensirion I2C SEN66
-version=1.0.0
+version=1.0.1
 author=Sensirion
 maintainer=Sensirion
 sentence=Library for the SEN66 sensor by Sensirion
diff --git a/metadata.yml b/metadata.yml
index 5baaa84..505283c 100644
--- a/metadata.yml
+++ b/metadata.yml
@@ -1,7 +1,7 @@
 # driver generation metadata
 generator_version: 1.0.1
-model_version: 1.3.0
+model_version: 1.3.1
 dg_status: released
-is_manually_modified: true
+is_manually_modified: false
 first_generated: '2024-10-30 08:14'
-last_generated: '2024-11-27 07:57'
+last_generated: '2024-12-03 09:56'
diff --git a/src/SensirionI2cSen66.cpp b/src/SensirionI2cSen66.cpp
index dcd18fc..90b9446 100644
--- a/src/SensirionI2cSen66.cpp
+++ b/src/SensirionI2cSen66.cpp
@@ -3,7 +3,7 @@
  *
  * Generator:     sensirion-driver-generator 1.0.1
  * Product:       sen66
- * Model-Version: 1.3.0
+ * Model-Version: 1.3.1
  */
 /*
  * Copyright (c) 2024, Sensirion AG
@@ -50,13 +50,6 @@ static uint8_t communication_buffer[48] = {0};
 SensirionI2cSen66::SensirionI2cSen66() {
 }
 
-float SensirionI2cSen66::signalMassConcentrationPm0p5(
-    uint16_t massConcentrationPm0p5Raw) {
-    float massConcentrationPm0p5 = 0.0;
-    massConcentrationPm0p5 = massConcentrationPm0p5Raw / 10.0;
-    return massConcentrationPm0p5;
-}
-
 float SensirionI2cSen66::signalMassConcentrationPm1p0(
     uint16_t massConcentrationPm1p0Raw) {
     float massConcentrationPm1p0 = 0.0;
@@ -85,6 +78,41 @@ float SensirionI2cSen66::signalMassConcentrationPm10p0(
     return massConcentrationPm10p0;
 }
 
+float SensirionI2cSen66::signalNumberConcentrationPm0p5(
+    uint16_t numberConcentrationPm0p5Raw) {
+    float numberConcentrationPm0p5 = 0.0;
+    numberConcentrationPm0p5 = numberConcentrationPm0p5Raw / 10.0;
+    return numberConcentrationPm0p5;
+}
+
+float SensirionI2cSen66::signalNumberConcentrationPm1p0(
+    uint16_t numberConcentrationPm1p0Raw) {
+    float numberConcentrationPm1p0 = 0.0;
+    numberConcentrationPm1p0 = numberConcentrationPm1p0Raw / 10.0;
+    return numberConcentrationPm1p0;
+}
+
+float SensirionI2cSen66::signalNumberConcentrationPm2p5(
+    uint16_t numberConcentrationPm2p5Raw) {
+    float numberConcentrationPm2p5 = 0.0;
+    numberConcentrationPm2p5 = numberConcentrationPm2p5Raw / 10.0;
+    return numberConcentrationPm2p5;
+}
+
+float SensirionI2cSen66::signalNumberConcentrationPm4p0(
+    uint16_t numberConcentrationPm4p0Raw) {
+    float numberConcentrationPm4p0 = 0.0;
+    numberConcentrationPm4p0 = numberConcentrationPm4p0Raw / 10.0;
+    return numberConcentrationPm4p0;
+}
+
+float SensirionI2cSen66::signalNumberConcentrationPm10p0(
+    uint16_t numberConcentrationPm10p0Raw) {
+    float numberConcentrationPm10p0 = 0.0;
+    numberConcentrationPm10p0 = numberConcentrationPm10p0Raw / 10.0;
+    return numberConcentrationPm10p0;
+}
+
 float SensirionI2cSen66::signalTemperature(int16_t temperatureRaw) {
     float temperature = 0.0;
     temperature = temperatureRaw / 200.0;
@@ -154,32 +182,37 @@ int16_t SensirionI2cSen66::readMeasuredValues(
 }
 
 int16_t SensirionI2cSen66::readNumberConcentrationValues(
-    float& massConcentrationPm0p5, float& massConcentrationPm1p0,
-    float& massConcentrationPm2p5, float& massConcentrationPm4p0,
-    float& massConcentrationPm10p0) {
-    uint16_t massConcentrationPm0p5Raw = 0;
-    uint16_t massConcentrationPm1p0Raw = 0;
-    uint16_t massConcentrationPm2p5Raw = 0;
-    uint16_t massConcentrationPm4p0Raw = 0;
-    uint16_t massConcentrationPm10p0Raw = 0;
+    float& numberConcentrationPm0p5, float& numberConcentrationPm1p0,
+    float& numberConcentrationPm2p5, float& numberConcentrationPm4p0,
+    float& numberConcentrationPm10p0) {
+    uint16_t numberConcentrationPm0p5Raw = 0;
+    uint16_t numberConcentrationPm1p0Raw = 0;
+    uint16_t numberConcentrationPm2p5Raw = 0;
+    uint16_t numberConcentrationPm4p0Raw = 0;
+    uint16_t numberConcentrationPm10p0Raw = 0;
     int16_t localError = 0;
     localError = readNumberConcentrationValuesAsIntegers(
-        massConcentrationPm0p5Raw, massConcentrationPm1p0Raw,
-        massConcentrationPm2p5Raw, massConcentrationPm4p0Raw,
-        massConcentrationPm10p0Raw);
-    if (localError != NO_ERROR) {
-        return localError;
-    }
-    massConcentrationPm0p5 = SensirionI2cSen66::signalMassConcentrationPm0p5(
-        massConcentrationPm0p5Raw);
-    massConcentrationPm1p0 = SensirionI2cSen66::signalMassConcentrationPm1p0(
-        massConcentrationPm1p0Raw);
-    massConcentrationPm2p5 = SensirionI2cSen66::signalMassConcentrationPm2p5(
-        massConcentrationPm2p5Raw);
-    massConcentrationPm4p0 = SensirionI2cSen66::signalMassConcentrationPm4p0(
-        massConcentrationPm4p0Raw);
-    massConcentrationPm10p0 = SensirionI2cSen66::signalMassConcentrationPm10p0(
-        massConcentrationPm10p0Raw);
+        numberConcentrationPm0p5Raw, numberConcentrationPm1p0Raw,
+        numberConcentrationPm2p5Raw, numberConcentrationPm4p0Raw,
+        numberConcentrationPm10p0Raw);
+    if (localError != NO_ERROR) {
+        return localError;
+    }
+    numberConcentrationPm0p5 =
+        SensirionI2cSen66::signalNumberConcentrationPm0p5(
+            numberConcentrationPm0p5Raw);
+    numberConcentrationPm1p0 =
+        SensirionI2cSen66::signalNumberConcentrationPm1p0(
+            numberConcentrationPm1p0Raw);
+    numberConcentrationPm2p5 =
+        SensirionI2cSen66::signalNumberConcentrationPm2p5(
+            numberConcentrationPm2p5Raw);
+    numberConcentrationPm4p0 =
+        SensirionI2cSen66::signalNumberConcentrationPm4p0(
+            numberConcentrationPm4p0Raw);
+    numberConcentrationPm10p0 =
+        SensirionI2cSen66::signalNumberConcentrationPm10p0(
+            numberConcentrationPm10p0Raw);
     return localError;
 }
 
diff --git a/src/SensirionI2cSen66.h b/src/SensirionI2cSen66.h
index 1dbce96..a1c3d7e 100644
--- a/src/SensirionI2cSen66.h
+++ b/src/SensirionI2cSen66.h
@@ -3,7 +3,7 @@
  *
  * Generator:     sensirion-driver-generator 1.0.1
  * Product:       sen66
- * Model-Version: 1.3.0
+ * Model-Version: 1.3.1
  */
 /*
  * Copyright (c) 2024, Sensirion AG
@@ -106,14 +106,14 @@ class SensirionI2cSen66 {
     /**
      * @brief Read measured values and apply scaling as defined in datasheet.
      *
-     * @param[out] massConcentrationPm1p0 Mass concentration for particles
-     * smaller than 1.0 μm.
-     * @param[out] massConcentrationPm2p5 Mass concentration for particles
-     * smaller than 2.5 μm.
-     * @param[out] massConcentrationPm4p0 Mass concentration for particles
-     * smaller than 4.0 μm.
-     * @param[out] massConcentrationPm10p0 Mass concentration for particles
-     * smaller than 10.0 μm.
+     * @param[out] massConcentrationPm1p0 Mass concentration in μg/m³ for
+     * particles smaller than 1.0 μm.
+     * @param[out] massConcentrationPm2p5 Mass concentration in μg/m³ for
+     * particles smaller than 2.5 μm.
+     * @param[out] massConcentrationPm4p0 Mass concentration in μg/m³ for
+     * particles smaller than 4.0 μm.
+     * @param[out] massConcentrationPm10p0 Mass concentration in μg/m³ for
+     * particles smaller than 10.0 μm.
      * @param[out] humidity Measured humidity in %RH.
      * @param[out] temperature Measured temperature in degrees celsius.
      * @param[out] vocIndex Measured VOC Index between 0 and 500.
@@ -133,24 +133,24 @@ class SensirionI2cSen66 {
      * @brief Read measured number concentration values and apply scaling as
      * defined in datasheet.
      *
-     * @param[out] massConcentrationPm0p5 Mass concentration for particles
-     * smaller than 1.0 μm.
-     * @param[out] massConcentrationPm1p0 Mass concentration for particles
-     * smaller than 1.0 μm.
-     * @param[out] massConcentrationPm2p5 Mass concentration for particles
-     * smaller than 2.5 μm.
-     * @param[out] massConcentrationPm4p0 Mass concentration for particles
-     * smaller than 4.0 μm.
-     * @param[out] massConcentrationPm10p0 Mass concentration for particles
-     * smaller than 10.0 μm.
+     * @param[out] numberConcentrationPm0p5 Number concentration in
+     * particles/cm³ for particles smaller than 0.5 μm.
+     * @param[out] numberConcentrationPm1p0 Number concentration in
+     * particles/cm³ for particles smaller than 1.0 μm.
+     * @param[out] numberConcentrationPm2p5 Number concentration in
+     * particles/cm³ for particles smaller than 2.5 μm.
+     * @param[out] numberConcentrationPm4p0 Number concentration in
+     * particles/cm³ for particles smaller than 4.0 μm.
+     * @param[out] numberConcentrationPm10p0 Number concentration in
+     * particles/cm³ for particles smaller than 10.0 μm.
      *
      * @return error_code 0 on success, an error code otherwise.
      */
-    int16_t readNumberConcentrationValues(float& massConcentrationPm0p5,
-                                          float& massConcentrationPm1p0,
-                                          float& massConcentrationPm2p5,
-                                          float& massConcentrationPm4p0,
-                                          float& massConcentrationPm10p0);
+    int16_t readNumberConcentrationValues(float& numberConcentrationPm0p5,
+                                          float& numberConcentrationPm1p0,
+                                          float& numberConcentrationPm2p5,
+                                          float& numberConcentrationPm4p0,
+                                          float& numberConcentrationPm10p0);
 
     /**
      * @brief Start a continuous measurement (interval 1s)
@@ -880,22 +880,12 @@ class SensirionI2cSen66 {
      */
     int16_t deviceReset();
 
-    /**
-     * @brief signalMassConcentrationPm0p5
-     *
-     * @param[in] massConcentrationPm0p5Raw
-     *
-     * @return Mass concentration for particles smaller than 0.5 μm
-     */
-    static float
-    signalMassConcentrationPm0p5(uint16_t massConcentrationPm0p5Raw);
-
     /**
      * @brief signalMassConcentrationPm1p0
      *
      * @param[in] massConcentrationPm1p0Raw
      *
-     * @return Mass concentration for particles smaller than 1.0 μm
+     * @return Mass concentration in μg/m³ for particles smaller than 1.0 μm
      */
     static float
     signalMassConcentrationPm1p0(uint16_t massConcentrationPm1p0Raw);
@@ -905,7 +895,7 @@ class SensirionI2cSen66 {
      *
      * @param[in] massConcentrationPm2p5Raw
      *
-     * @return Mass concentration for particles smaller than 2.5 μm
+     * @return Mass concentration in μg/m³ for particles smaller than 2.5 μm
      */
     static float
     signalMassConcentrationPm2p5(uint16_t massConcentrationPm2p5Raw);
@@ -915,7 +905,7 @@ class SensirionI2cSen66 {
      *
      * @param[in] massConcentrationPm4p0Raw
      *
-     * @return Mass concentration for particles smaller than 4.0 μm
+     * @return Mass concentration in μg/m³ for particles smaller than 4.0 μm
      */
     static float
     signalMassConcentrationPm4p0(uint16_t massConcentrationPm4p0Raw);
@@ -925,11 +915,66 @@ class SensirionI2cSen66 {
      *
      * @param[in] massConcentrationPm10p0Raw
      *
-     * @return Mass concentration for particles smaller than 10.0 μm
+     * @return Mass concentration in μg/m³ for particles smaller than 10.0 μm
      */
     static float
     signalMassConcentrationPm10p0(uint16_t massConcentrationPm10p0Raw);
 
+    /**
+     * @brief signalNumberConcentrationPm0p5
+     *
+     * @param[in] numberConcentrationPm0p5Raw
+     *
+     * @return Number concentration in particles/cm³ for particles smaller than
+     * 0.5 μm
+     */
+    static float
+    signalNumberConcentrationPm0p5(uint16_t numberConcentrationPm0p5Raw);
+
+    /**
+     * @brief signalNumberConcentrationPm1p0
+     *
+     * @param[in] numberConcentrationPm1p0Raw
+     *
+     * @return Number concentration in particles/cm³ for particles smaller
+     * than 1.0 μm
+     */
+    static float
+    signalNumberConcentrationPm1p0(uint16_t numberConcentrationPm1p0Raw);
+
+    /**
+     * @brief signalNumberConcentrationPm2p5
+     *
+     * @param[in] numberConcentrationPm2p5Raw
+     *
+     * @return Number concentration in particles/cm³ for particles smaller
+     * than 2.5 μm
+     */
+    static float
+    signalNumberConcentrationPm2p5(uint16_t numberConcentrationPm2p5Raw);
+
+    /**
+     * @brief signalNumberConcentrationPm4p0
+     *
+     * @param[in] numberConcentrationPm4p0Raw
+     *
+     * @return Number concentration in particles/cm³ for particles smaller
+     * than 4.0 μm
+     */
+    static float
+    signalNumberConcentrationPm4p0(uint16_t numberConcentrationPm4p0Raw);
+
+    /**
+     * @brief signalNumberConcentrationPm10p0
+     *
+     * @param[in] numberConcentrationPm10p0Raw
+     *
+     * @return Number concentration in particles/cm³ for particles smaller
+     * than 10.0 μm
+     */
+    static float
+    signalNumberConcentrationPm10p0(uint16_t numberConcentrationPm10p0Raw);
+
     /**
      * @brief signalTemperature
      *