diff --git a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/PlugwiseMessageProcessor.java b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/PlugwiseMessageProcessor.java
index 27fb280dc19..c348a6930f6 100644
--- a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/PlugwiseMessageProcessor.java
+++ b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/PlugwiseMessageProcessor.java
@@ -30,6 +30,7 @@ import org.openhab.binding.plugwise.internal.protocol.field.MessageType;
 import org.openhab.core.io.transport.serial.SerialPort;
 import org.openhab.core.io.transport.serial.SerialPortEvent;
 import org.openhab.core.io.transport.serial.SerialPortEventListener;
+import org.openhab.core.util.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -93,7 +94,7 @@ public class PlugwiseMessageProcessor implements SerialPortEventListener {
      */
     private void parseAndQueue(ByteBuffer readBuffer) {
         String response = new String(readBuffer.array(), 0, readBuffer.limit());
-        response = response.replace("\r", "").replace("\n", "");
+        response = StringUtils.chomp(response);
 
         Matcher matcher = RESPONSE_PATTERN.matcher(response);
 
diff --git a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/PlugwiseUtils.java b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/PlugwiseUtils.java
index ceb722888a1..dfbdb872a02 100644
--- a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/PlugwiseUtils.java
+++ b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/PlugwiseUtils.java
@@ -99,22 +99,6 @@ public final class PlugwiseUtils {
         }
     }
 
-    public static String upperUnderscoreToLowerCamel(String text) {
-        final String delimiter = "_";
-        StringBuilder upperCamelBuilder = new StringBuilder(text.length());
-        for (String str : text.split(delimiter)) {
-            if (upperCamelBuilder.isEmpty() && !str.isEmpty()) {
-                upperCamelBuilder.append(str.substring(0, 1).toLowerCase());
-            } else if (!str.isEmpty()) {
-                upperCamelBuilder.append(str.substring(0, 1).toUpperCase());
-            }
-            if (str.length() > 1) {
-                upperCamelBuilder.append(str.substring(1).toLowerCase());
-            }
-        }
-        return upperCamelBuilder.toString();
-    }
-
     public static boolean updateProperties(Map<String, String> properties, InformationResponseMessage message) {
         boolean update = false;
 
diff --git a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseRelayConfig.java b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseRelayConfig.java
index 9477ad0a177..d6fde718a9d 100644
--- a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseRelayConfig.java
+++ b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseRelayConfig.java
@@ -12,13 +12,15 @@
  */
 package org.openhab.binding.plugwise.internal.config;
 
-import static org.openhab.binding.plugwise.internal.PlugwiseUtils.*;
 import static org.openhab.binding.plugwise.internal.config.PlugwiseRelayConfig.PowerStateChanging.COMMAND_SWITCHING;
 
 import java.time.Duration;
+import java.util.Objects;
 
 import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.openhab.binding.plugwise.internal.PlugwiseUtils;
 import org.openhab.binding.plugwise.internal.protocol.field.MACAddress;
+import org.openhab.core.util.StringUtils;
 
 /**
  * The {@link PlugwiseRelayConfig} class represents the configuration for a Plugwise relay device (Circle, Circle+,
@@ -36,7 +38,8 @@ public class PlugwiseRelayConfig {
     }
 
     private String macAddress = "";
-    private String powerStateChanging = upperUnderscoreToLowerCamel(COMMAND_SWITCHING.name());
+    private String powerStateChanging = Objects
+            .requireNonNull(StringUtils.capitalizeByUnderscore(COMMAND_SWITCHING.name()));
     private boolean suppliesPower = false;
     private int measurementInterval = 60; // minutes
     private boolean temporarilyNotInNetwork = false;
@@ -47,7 +50,7 @@ public class PlugwiseRelayConfig {
     }
 
     public PowerStateChanging getPowerStateChanging() {
-        return PowerStateChanging.valueOf(lowerCamelToUpperUnderscore(powerStateChanging));
+        return PowerStateChanging.valueOf(PlugwiseUtils.lowerCamelToUpperUnderscore(powerStateChanging));
     }
 
     public boolean isSuppliesPower() {
diff --git a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseScanConfig.java b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseScanConfig.java
index fa06bdc616e..d9e2783204b 100644
--- a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseScanConfig.java
+++ b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseScanConfig.java
@@ -12,14 +12,16 @@
  */
 package org.openhab.binding.plugwise.internal.config;
 
-import static org.openhab.binding.plugwise.internal.PlugwiseUtils.*;
 import static org.openhab.binding.plugwise.internal.protocol.field.Sensitivity.MEDIUM;
 
 import java.time.Duration;
+import java.util.Objects;
 
 import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.openhab.binding.plugwise.internal.PlugwiseUtils;
 import org.openhab.binding.plugwise.internal.protocol.field.MACAddress;
 import org.openhab.binding.plugwise.internal.protocol.field.Sensitivity;
+import org.openhab.core.util.StringUtils;
 
 /**
  * The {@link PlugwiseScanConfig} class represents the configuration for a Plugwise Scan.
@@ -30,7 +32,7 @@ import org.openhab.binding.plugwise.internal.protocol.field.Sensitivity;
 public class PlugwiseScanConfig {
 
     private String macAddress = "";
-    private String sensitivity = upperUnderscoreToLowerCamel(MEDIUM.name());
+    private String sensitivity = Objects.requireNonNull(StringUtils.capitalizeByUnderscore(MEDIUM.name()));
     private int switchOffDelay = 5; // minutes
     private boolean daylightOverride = false;
     private int wakeupInterval = 1440; // minutes (1 day)
@@ -43,7 +45,7 @@ public class PlugwiseScanConfig {
     }
 
     public Sensitivity getSensitivity() {
-        return Sensitivity.valueOf(lowerCamelToUpperUnderscore(sensitivity));
+        return Sensitivity.valueOf(PlugwiseUtils.lowerCamelToUpperUnderscore(sensitivity));
     }
 
     public Duration getSwitchOffDelay() {
diff --git a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseSenseConfig.java b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseSenseConfig.java
index 342ac8f4692..acde2175ba6 100644
--- a/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseSenseConfig.java
+++ b/bundles/org.openhab.binding.plugwise/src/main/java/org/openhab/binding/plugwise/internal/config/PlugwiseSenseConfig.java
@@ -12,18 +12,20 @@
  */
 package org.openhab.binding.plugwise.internal.config;
 
-import static org.openhab.binding.plugwise.internal.PlugwiseUtils.*;
 import static org.openhab.binding.plugwise.internal.protocol.field.BoundaryAction.OFF_BELOW_ON_ABOVE;
 import static org.openhab.binding.plugwise.internal.protocol.field.BoundaryType.NONE;
 
 import java.time.Duration;
+import java.util.Objects;
 
 import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.openhab.binding.plugwise.internal.PlugwiseUtils;
 import org.openhab.binding.plugwise.internal.protocol.field.BoundaryAction;
 import org.openhab.binding.plugwise.internal.protocol.field.BoundaryType;
 import org.openhab.binding.plugwise.internal.protocol.field.Humidity;
 import org.openhab.binding.plugwise.internal.protocol.field.MACAddress;
 import org.openhab.binding.plugwise.internal.protocol.field.Temperature;
+import org.openhab.core.util.StringUtils;
 
 /**
  * The {@link PlugwiseScanConfig} class represents the configuration for a Plugwise Sense.
@@ -35,8 +37,9 @@ public class PlugwiseSenseConfig {
 
     private String macAddress = "";
     private int measurementInterval = 15; // minutes
-    private String boundaryType = upperUnderscoreToLowerCamel(NONE.name());
-    private String boundaryAction = upperUnderscoreToLowerCamel(OFF_BELOW_ON_ABOVE.name());
+    private String boundaryType = Objects.requireNonNull(StringUtils.capitalizeByUnderscore(NONE.name()));
+    private String boundaryAction = Objects
+            .requireNonNull(StringUtils.capitalizeByUnderscore(OFF_BELOW_ON_ABOVE.name()));
     private int temperatureBoundaryMin = 15; // degrees Celsius
     private int temperatureBoundaryMax = 25; // degrees Celsius
     private int humidityBoundaryMin = 45; // relative humidity (RH)
@@ -54,11 +57,11 @@ public class PlugwiseSenseConfig {
     }
 
     public BoundaryType getBoundaryType() {
-        return BoundaryType.valueOf(lowerCamelToUpperUnderscore(boundaryType));
+        return BoundaryType.valueOf(PlugwiseUtils.lowerCamelToUpperUnderscore(boundaryType));
     }
 
     public BoundaryAction getBoundaryAction() {
-        return BoundaryAction.valueOf(lowerCamelToUpperUnderscore(boundaryAction));
+        return BoundaryAction.valueOf(PlugwiseUtils.lowerCamelToUpperUnderscore(boundaryAction));
     }
 
     public Temperature getTemperatureBoundaryMin() {
diff --git a/bundles/org.openhab.binding.plugwise/src/test/java/org/openhab/binding/plugwise/internal/PlugwiseUtilsTest.java b/bundles/org.openhab.binding.plugwise/src/test/java/org/openhab/binding/plugwise/internal/PlugwiseUtilsTest.java
deleted file mode 100644
index a72f84037ac..00000000000
--- a/bundles/org.openhab.binding.plugwise/src/test/java/org/openhab/binding/plugwise/internal/PlugwiseUtilsTest.java
+++ /dev/null
@@ -1,38 +0,0 @@
-/**
- * Copyright (c) 2010-2023 Contributors to the openHAB project
- *
- * See the NOTICE file(s) distributed with this work for additional
- * information.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License 2.0 which is available at
- * http://www.eclipse.org/legal/epl-2.0
- *
- * SPDX-License-Identifier: EPL-2.0
- */
-
-package org.openhab.binding.plugwise.internal;
-
-import static org.junit.jupiter.api.Assertions.*;
-
-import org.eclipse.jdt.annotation.NonNullByDefault;
-import org.junit.jupiter.api.Test;
-
-/**
- * The {@link PlugwiseUtilsTest} class tests some static string utility methods
- *
- * @author Leo Siepel - Initial contribution
- */
-@NonNullByDefault
-public class PlugwiseUtilsTest {
-
-    @Test
-    public void upperUnderscoreToLowerCamelBaseTest() {
-        assertEquals("nodelimiterpresent", PlugwiseUtils.upperUnderscoreToLowerCamel("NoDelimiterPresent"));
-        assertEquals("delimiterIsPresent", PlugwiseUtils.upperUnderscoreToLowerCamel("DeliMiter_iS_PreSent"));
-        assertEquals("doubleDelimitersDouble", PlugwiseUtils.upperUnderscoreToLowerCamel("DOUBLE__DELIMITERS__DOUBLE"));
-        assertEquals("helloWorld", PlugwiseUtils.upperUnderscoreToLowerCamel("HELLO_WORLD"));
-        assertEquals("", PlugwiseUtils.upperUnderscoreToLowerCamel(""));
-        assertEquals("", PlugwiseUtils.upperUnderscoreToLowerCamel("_"));
-    }
-}