diff --git a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UnfiPortOverride.java b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UnfiPortOverride.java
index 3c54d1c490b6b..bd4a41ff06ab3 100644
--- a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UnfiPortOverride.java
+++ b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UnfiPortOverride.java
@@ -63,4 +63,10 @@ public void setPortconfId(final String portconfId) {
     public void setPoeMode(final String poeMode) {
         this.poeMode = poeMode;
     }
+
+    @Override
+    public String toString() {
+        return String.format("UnfiPortOverride{portIx: '%d', portconfId: '%s', poeMode: '%s'}", portIdx, portconfId,
+                poeMode);
+    }
 }
diff --git a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiClient.java b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiClient.java
index 657eb5db5bcd4..b3e252279984d 100644
--- a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiClient.java
+++ b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiClient.java
@@ -128,7 +128,7 @@ public Integer getExperience() {
     @Override
     public String toString() {
         return String.format(
-                "UniFiClient{id: '%s', mac: '%s', ip: '%s', hostname: '%s', alias: '%s', wired: %b, guest: %b, blocked: %b, device: %s, experience: %d}",
-                id, mac, getIp(), hostname, alias, isWired(), guest, blocked, getDevice(), experience);
+                "UniFiClient{id: '%s', mac: '%s', ip: '%s', hostname: '%s', alias: '%s', wired: %b, guest: %b, blocked: %b, experience: %d, device: %s}",
+                id, mac, getIp(), hostname, alias, isWired(), guest, blocked, experience, getDevice());
     }
 }
diff --git a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiPortOverrides.java b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiPortOverrides.java
index e7a6c8175a5eb..f6645781dc5af 100644
--- a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiPortOverrides.java
+++ b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiPortOverrides.java
@@ -34,4 +34,9 @@ public void addPortOverride(final UnfiPortOverride unfiPortOverride) {
     public void addPortOverride(final int portIdx, final String portconfId, final String poeMode) {
         portOverrides.add(new UnfiPortOverride(portIdx, portconfId, poeMode));
     }
+
+    @Override
+    public String toString() {
+        return String.format("UniFiPortOverrides: {}", String.join(", ", portOverrides.toArray(new String[0])));
+    }
 }
diff --git a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiPortTable.java b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiPortTable.java
index 7ea6834fa598e..3cb546f3e8dfd 100644
--- a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiPortTable.java
+++ b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiPortTable.java
@@ -79,4 +79,11 @@ public String getPoeVoltage() {
     public String getPoeCurrent() {
         return poeCurrent;
     }
+
+    @Override
+    public String toString() {
+        return String.format(
+                "UniFiPortTable{name: '%s', enable: '%b', up: '%b', portPoe: '%b', poeEnable: '%b, poePower: '%s', poeVoltage: '%s', poeCurrent: '%s'}",
+                name, enable, up, portPoe, poeEnable, poePower, poeVoltage, poeCurrent);
+    }
 }
diff --git a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiSite.java b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiSite.java
index 8798329be5546..f72ef5ec513d8 100644
--- a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiSite.java
+++ b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiSite.java
@@ -63,6 +63,6 @@ public boolean matchesName(final String siteName) {
 
     @Override
     public String toString() {
-        return String.format("UniFiSite{name: '%s', desc: '%s'}", name, desc);
+        return String.format("UniFiSite{id: '%s', name: '%s', desc: '%s'}", id, name, desc);
     }
 }
diff --git a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiWlan.java b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiWlan.java
index 50a511a2e638c..1eaf52e32e574 100644
--- a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiWlan.java
+++ b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/api/dto/UniFiWlan.java
@@ -82,4 +82,14 @@ public String getXPassphrase() {
     public boolean isHideSsid() {
         return Boolean.TRUE.equals(hideSsid);
     }
+
+    @Override
+    public String toString() {
+        final String xPassphraseString = xPassphrase == null ? ""
+                : (xPassphrase.substring(0, Math.min(5, xPassphrase.length())) + "*".repeat(10));
+
+        return String.format(
+                "UniFiWlan{id: '%s', name: '%s', enable: '%b', security: '%s', wlanBand: '%s', wpaEnc: '%s', wpaMode: '%s', xPassphrase: '%s', hideSsid: '%b', site: '%s'}",
+                id, name, enabled, security, wlanBand, wpaEnc, wpaMode, xPassphraseString, hideSsid, getSite());
+    }
 }
diff --git a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/handler/UniFiWlanThingHandler.java b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/handler/UniFiWlanThingHandler.java
index 0a1a877c64d65..43fc9e5a0bb86 100644
--- a/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/handler/UniFiWlanThingHandler.java
+++ b/bundles/org.openhab.binding.unifi/src/main/java/org/openhab/binding/unifi/internal/handler/UniFiWlanThingHandler.java
@@ -143,16 +143,17 @@ private static State countClients(final UniFiWlan wlan, final Function<UniFiClie
      */
     private static State qrcodeEncoding(final UniFiWlan wlan) {
         final String name = encode(wlan.getName());
-        final boolean nopass = wlan.getXPassphrase().isBlank();
+        final String xPassphrase = wlan.getXPassphrase();
+        final boolean nopass = xPassphrase == null || xPassphrase.isBlank();
         final String mode = nopass ? "nopass" : "WPA";
         final String hidden = wlan.isHideSsid() ? "H:true" : "";
-        final String passcode = nopass ? "" : "P:" + encode(wlan.getXPassphrase());
+        final String passcode = nopass ? "" : "P:" + encode(xPassphrase);
 
         return StringType.valueOf(String.format("WIFI:S:%s;T:%s;%s;%s;", name, mode, passcode, hidden));
     }
 
-    private static String encode(final String string) {
-        return string.replaceAll("([\\;,\":])", "\\\\$1");
+    private static String encode(final @Nullable String value) {
+        return value == null ? "" : value.replaceAll("([\\;,\":])", "\\\\$1");
     }
 
     @Override