diff --git a/src/HaHelper.h b/src/HaHelper.h
index d5d39db..87678bd 100644
--- a/src/HaHelper.h
+++ b/src/HaHelper.h
@@ -546,7 +546,7 @@ public:
     doc[FPSTR(HA_COMMAND_TOPIC)] = this->getDeviceTopic(F("settings/set"));
     doc[FPSTR(HA_COMMAND_TEMPLATE)] = F("{\"pid\": {\"dt\" : {{ value }}}}");
     doc[FPSTR(HA_MIN)] = 30;
-    doc[FPSTR(HA_MAX)] = 600;
+    doc[FPSTR(HA_MAX)] = 1800;
     doc[FPSTR(HA_STEP)] = 1;
     doc[FPSTR(HA_MODE)] = "box";
     doc[FPSTR(HA_EXPIRE_AFTER)] = 120;
diff --git a/src/utils.h b/src/utils.h
index 89421ad..1c23f73 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -1084,7 +1084,7 @@ bool jsonToSettings(const JsonVariantConst src, Settings& dst, bool safe = false
   if (!src["pid"]["dt"].isNull()) {
     unsigned short value = src["pid"]["dt"].as<unsigned short>();
 
-    if (value >= 30 && value <= 600 && value != dst.pid.dt) {
+    if (value >= 30 && value <= 1800 && value != dst.pid.dt) {
       dst.pid.dt = value;
       changed = true;
     }
diff --git a/src_data/pages/settings.html b/src_data/pages/settings.html
index 35a8c16..f73b22c 100644
--- a/src_data/pages/settings.html
+++ b/src_data/pages/settings.html
@@ -341,7 +341,7 @@
 
               <label for="pid-dt">
                 <span data-i18n>settings.pid.dt</span>
-                <input type="number" inputmode="numeric" id="pid-dt" name="pid[dt]" min="30" max="600" step="1" required>
+                <input type="number" inputmode="numeric" id="pid-dt" name="pid[dt]" min="30" max="1800" step="1" required>
               </label>
 
               <hr />