diff --git a/contexts/frontend.md b/contexts/frontend.md
index 6b7f7a9..11dad8f 100644
--- a/contexts/frontend.md
+++ b/contexts/frontend.md
@@ -55,6 +55,19 @@ Add hint text to both `en.json` and `ru.json` locale files using a `.hint` suffi
 
 Do **not** add placeholder options like `-- Select something --`. Populate the `<select>` with real options only and let the first one be selected by default.
 
+### Empty/None option format
+
+When a selector has an optional entity (e.g., sync clock, processing template, brightness source), the empty option must use the format `None (<description>)` where the description explains what happens when nothing is selected. Use i18n keys, never hardcoded `—` or bare `None`.
+
+Examples:
+- `None (no processing template)` — `t('common.none_no_cspt')`
+- `None (no input source)` — `t('common.none_no_input')`
+- `None (use own speed)` — `t('common.none_own_speed')`
+- `None (full brightness)` — `t('color_strip.composite.brightness.none')`
+- `None (device brightness)` — `t('targets.brightness_vs.none')`
+
+For `EntitySelect` with `allowNone: true`, pass the same i18n string as `noneLabel`.
+
 ### Enhanced selectors (IconSelect & EntitySelect)
 
 Plain `<select>` dropdowns should be enhanced with visual selectors depending on the data type:
diff --git a/server/src/wled_controller/static/js/features/color-strips.js b/server/src/wled_controller/static/js/features/color-strips.js
index a1933eb..62c5c03 100644
--- a/server/src/wled_controller/static/js/features/color-strips.js
+++ b/server/src/wled_controller/static/js/features/color-strips.js
@@ -222,7 +222,7 @@ export function onCSSTypeChange() {
 function _populateClockDropdown(selectedId) {
     const sel = document.getElementById('css-editor-clock');
     const prev = selectedId !== undefined ? selectedId : sel.value;
-    sel.innerHTML = `<option value="">${t('common.none')}</option>` +
+    sel.innerHTML = `<option value="">${t('common.none_own_speed')}</option>` +
         _cachedSyncClocks.map(c => `<option value="${c.id}">${escapeHtml(c.name)} (${c.speed}x)</option>`).join('');
     sel.value = prev || '';
 
@@ -238,7 +238,7 @@ function _populateClockDropdown(selectedId) {
         })),
         placeholder: t('palette.search'),
         allowNone: true,
-        noneLabel: t('common.none'),
+        noneLabel: t('common.none_own_speed'),
     });
 }
 
@@ -253,7 +253,7 @@ function _populateProcessedSelectors() {
     const inputSources = allSources.filter(s => s.id !== editingId && s.source_type !== 'processed');
     const inputSel = document.getElementById('css-editor-processed-input');
     const prevInput = inputSel.value;
-    inputSel.innerHTML = '<option value="">—</option>' +
+    inputSel.innerHTML = `<option value="">${t('common.none_no_input')}</option>` +
         inputSources.map(s => `<option value="${s.id}">${escapeHtml(s.name)}</option>`).join('');
     inputSel.value = prevInput || '';
     if (_processedInputEntitySelect) _processedInputEntitySelect.destroy();
@@ -270,7 +270,7 @@ function _populateProcessedSelectors() {
     const templates = csptCache.data || [];
     const tplSel = document.getElementById('css-editor-processed-template');
     const prevTpl = tplSel.value;
-    tplSel.innerHTML = '<option value="">—</option>' +
+    tplSel.innerHTML = `<option value="">${t('common.none_no_cspt')}</option>` +
         templates.map(tp => `<option value="${tp.id}">${escapeHtml(tp.name)}</option>`).join('');
     tplSel.value = prevTpl || '';
     if (_processedTemplateEntitySelect) _processedTemplateEntitySelect.destroy();
@@ -644,7 +644,7 @@ function _compositeRenderList() {
                 `<option value="${v.id}"${layer.brightness_source_id === v.id ? ' selected' : ''}>${escapeHtml(v.name)}</option>`
             ).join('');
         const csptList = _cachedCSPTemplates || [];
-        const csptOptions = `<option value="">${t('common.none')}</option>` +
+        const csptOptions = `<option value="">${t('common.none_no_cspt')}</option>` +
             csptList.map(tmpl =>
                 `<option value="${tmpl.id}"${layer.processing_template_id === tmpl.id ? ' selected' : ''}>${escapeHtml(tmpl.name)}</option>`
             ).join('');
@@ -734,7 +734,7 @@ function _compositeRenderList() {
             getItems: _getCompositeCSPTItems,
             placeholder: t('palette.search'),
             allowNone: true,
-            noneLabel: t('common.none'),
+            noneLabel: t('common.none_no_cspt'),
         }));
     });
 }
diff --git a/server/src/wled_controller/static/js/features/device-discovery.js b/server/src/wled_controller/static/js/features/device-discovery.js
index 7e9d6be..4fdbee8 100644
--- a/server/src/wled_controller/static/js/features/device-discovery.js
+++ b/server/src/wled_controller/static/js/features/device-discovery.js
@@ -70,7 +70,7 @@ function _ensureCsptEntitySelect() {
     if (!sel) return;
     const templates = csptCache.data || [];
     // Populate native <select> options
-    sel.innerHTML = `<option value="">—</option>` +
+    sel.innerHTML = `<option value="">${t('common.none_no_cspt')}</option>` +
         templates.map(tp => `<option value="${tp.id}">${tp.name}</option>`).join('');
     if (_csptEntitySelect) _csptEntitySelect.destroy();
     if (templates.length > 0) {
@@ -84,7 +84,7 @@ function _ensureCsptEntitySelect() {
             })),
             placeholder: t('palette.search'),
             allowNone: true,
-            noneLabel: '—',
+            noneLabel: t('common.none_no_cspt'),
         });
     }
 }
diff --git a/server/src/wled_controller/static/js/features/devices.js b/server/src/wled_controller/static/js/features/devices.js
index dc4f2c7..6fd1dc5 100644
--- a/server/src/wled_controller/static/js/features/devices.js
+++ b/server/src/wled_controller/static/js/features/devices.js
@@ -24,7 +24,7 @@ function _ensureSettingsCsptSelect() {
     const sel = document.getElementById('settings-css-processing-template');
     if (!sel) return;
     const templates = csptCache.data || [];
-    sel.innerHTML = `<option value="">—</option>` +
+    sel.innerHTML = `<option value="">${t('common.none_no_cspt')}</option>` +
         templates.map(tp => `<option value="${tp.id}">${tp.name}</option>`).join('');
     if (_settingsCsptEntitySelect) _settingsCsptEntitySelect.destroy();
     if (templates.length > 0) {
@@ -38,7 +38,7 @@ function _ensureSettingsCsptSelect() {
             })),
             placeholder: window.t ? t('palette.search') : 'Search...',
             allowNone: true,
-            noneLabel: '—',
+            noneLabel: t('common.none_no_cspt'),
         });
     }
 }
diff --git a/server/src/wled_controller/static/locales/en.json b/server/src/wled_controller/static/locales/en.json
index 44fbd5f..d263602 100644
--- a/server/src/wled_controller/static/locales/en.json
+++ b/server/src/wled_controller/static/locales/en.json
@@ -410,6 +410,9 @@
   "common.edit": "Edit",
   "common.clone": "Clone",
   "common.none": "None",
+  "common.none_no_cspt": "None (no processing template)",
+  "common.none_no_input": "None (no input source)",
+  "common.none_own_speed": "None (use own speed)",
   "palette.search": "Search…",
   "section.filter.placeholder": "Filter...",
   "section.filter.reset": "Clear filter",
@@ -803,7 +806,7 @@
   "automations.scene": "Scene:",
   "automations.scene.hint": "Scene preset to activate when conditions are met",
   "automations.scene.search_placeholder": "Search scenes...",
-  "automations.scene.none_selected": "No scene",
+  "automations.scene.none_selected": "None (no scene)",
   "automations.scene.none_available": "No scenes available",
   "automations.deactivation_mode": "Deactivation:",
   "automations.deactivation_mode.hint": "What happens when conditions stop matching",
@@ -1097,7 +1100,7 @@
   "color_strip.composite.blend_mode.screen.desc": "Brightens, inverse of multiply",
   "color_strip.composite.opacity": "Opacity",
   "color_strip.composite.brightness": "Brightness",
-  "color_strip.composite.brightness.none": "— None —",
+  "color_strip.composite.brightness.none": "None (full brightness)",
   "color_strip.composite.processing": "Processing",
   "color_strip.composite.enabled": "Enabled",
   "color_strip.composite.error.min_layers": "At least 1 layer is required",
diff --git a/server/src/wled_controller/static/locales/ru.json b/server/src/wled_controller/static/locales/ru.json
index 48486ab..43e526c 100644
--- a/server/src/wled_controller/static/locales/ru.json
+++ b/server/src/wled_controller/static/locales/ru.json
@@ -410,6 +410,9 @@
   "common.edit": "Редактировать",
   "common.clone": "Клонировать",
   "common.none": "Нет",
+  "common.none_no_cspt": "Нет (без шаблона обработки)",
+  "common.none_no_input": "Нет (без источника)",
+  "common.none_own_speed": "Нет (своя скорость)",
   "palette.search": "Поиск…",
   "section.filter.placeholder": "Фильтр...",
   "section.filter.reset": "Очистить фильтр",
@@ -803,7 +806,7 @@
   "automations.scene": "Сцена:",
   "automations.scene.hint": "Пресет сцены для активации при выполнении условий",
   "automations.scene.search_placeholder": "Поиск сцен...",
-  "automations.scene.none_selected": "Нет сцены",
+  "automations.scene.none_selected": "Нет (без сцены)",
   "automations.scene.none_available": "Нет доступных сцен",
   "automations.deactivation_mode": "Деактивация:",
   "automations.deactivation_mode.hint": "Что происходит, когда условия перестают выполняться",
@@ -1097,7 +1100,7 @@
   "color_strip.composite.blend_mode.screen.desc": "Осветляет, обратное умножение",
   "color_strip.composite.opacity": "Непрозрачность",
   "color_strip.composite.brightness": "Яркость",
-  "color_strip.composite.brightness.none": "— Нет —",
+  "color_strip.composite.brightness.none": "Нет (полная яркость)",
   "color_strip.composite.processing": "Обработка",
   "color_strip.composite.enabled": "Включён",
   "color_strip.composite.error.min_layers": "Необходим хотя бы 1 слой",
diff --git a/server/src/wled_controller/static/locales/zh.json b/server/src/wled_controller/static/locales/zh.json
index c1fc4be..ce4900e 100644
--- a/server/src/wled_controller/static/locales/zh.json
+++ b/server/src/wled_controller/static/locales/zh.json
@@ -410,6 +410,9 @@
   "common.edit": "编辑",
   "common.clone": "克隆",
   "common.none": "无",
+  "common.none_no_cspt": "无（无处理模板）",
+  "common.none_no_input": "无（无输入源）",
+  "common.none_own_speed": "无（使用自身速度）",
   "palette.search": "搜索…",
   "section.filter.placeholder": "筛选...",
   "section.filter.reset": "清除筛选",
@@ -803,7 +806,7 @@
   "automations.scene": "场景：",
   "automations.scene.hint": "条件满足时激活的场景预设",
   "automations.scene.search_placeholder": "搜索场景...",
-  "automations.scene.none_selected": "无场景",
+  "automations.scene.none_selected": "无（无场景）",
   "automations.scene.none_available": "没有可用的场景",
   "automations.deactivation_mode": "停用方式：",
   "automations.deactivation_mode.hint": "条件不再满足时的行为",
@@ -1097,7 +1100,7 @@
   "color_strip.composite.blend_mode.screen.desc": "提亮，正片叠底的反转",
   "color_strip.composite.opacity": "不透明度",
   "color_strip.composite.brightness": "亮度",
-  "color_strip.composite.brightness.none": "— 无 —",
+  "color_strip.composite.brightness.none": "无（全亮度）",
   "color_strip.composite.processing": "处理",
   "color_strip.composite.enabled": "启用",
   "color_strip.composite.error.min_layers": "至少需要 1 个图层",