diff --git a/src/Hc900Crawler/Controllers/PointBuilderController.cs b/src/Hc900Crawler/Controllers/PointBuilderController.cs
index 9eed2bd..a0098ce 100644
--- a/src/Hc900Crawler/Controllers/PointBuilderController.cs
+++ b/src/Hc900Crawler/Controllers/PointBuilderController.cs
@@ -332,6 +332,36 @@ public class PointBuilderController : ControllerBase
         return Ok(new { success = true, count, message = $"{count}개 포인트 추가 완료" });
     }
 
+    public sealed record RealtimeBulkDto(List<int>? Ids, string? ControllerId);
+
+    // 전체 태그 목록에서 선택(id)한 태그를 realtime_table에 즉시 라이브로 편입
+    [HttpPost("realtime-add")]
+    public async Task<IActionResult> RealtimeAdd([FromBody] RealtimeBulkDto dto)
+    {
+        if (dto.Ids == null || dto.Ids.Count == 0)
+            return BadRequest(new { success = false, error = "ids는 최소 1개 이상 필요합니다" });
+        if (string.IsNullOrEmpty(dto.ControllerId))
+            return BadRequest(new { success = false, error = "controllerId는 필수입니다" });
+
+        var count = await _db.Hc900RealtimeAddByIdsAsync(dto.ControllerId, dto.Ids);
+        _log.LogInformation("[PointBuilder] 실시간 추가: {Count}개 (controller={Ctrl})", count, dto.ControllerId);
+        return Ok(new { success = true, count, message = $"{count}개 실시간 편입 완료" });
+    }
+
+    // 선택(id)한 태그를 realtime_table에서 제거
+    [HttpPost("realtime-remove")]
+    public async Task<IActionResult> RealtimeRemove([FromBody] RealtimeBulkDto dto)
+    {
+        if (dto.Ids == null || dto.Ids.Count == 0)
+            return BadRequest(new { success = false, error = "ids는 최소 1개 이상 필요합니다" });
+        if (string.IsNullOrEmpty(dto.ControllerId))
+            return BadRequest(new { success = false, error = "controllerId는 필수입니다" });
+
+        var count = await _db.Hc900RealtimeRemoveByIdsAsync(dto.ControllerId, dto.Ids);
+        _log.LogInformation("[PointBuilder] 실시간 제거: {Count}개 (controller={Ctrl})", count, dto.ControllerId);
+        return Ok(new { success = true, count, message = $"{count}개 실시간 제거 완료" });
+    }
+
     [HttpGet("points")]
     public async Task<IActionResult> GetPoints(
         [FromQuery] string? rt = null,        // null/"" = 전체, "only" = 실시간(realtime_table만), "exclude" = 실시간 제외
diff --git a/src/Hc900Crawler/wwwroot/js/pb.js b/src/Hc900Crawler/wwwroot/js/pb.js
index 301b11f..bad234b 100644
--- a/src/Hc900Crawler/wwwroot/js/pb.js
+++ b/src/Hc900Crawler/wwwroot/js/pb.js
@@ -70,6 +70,13 @@ async function pbPreview() {
   }
 }
 
+function pbClosePreview() {
+  const area = document.getElementById('pb-preview-area');
+  if (area) area.style.display = 'none';
+  const chk = document.getElementById('pb-chk-all-preview');
+  if (chk) chk.checked = false;
+}
+
 async function pbBuild() {
   if (!confirm('모든 활성 태그를 해제하고 조건에 맞는 태그만 활성화합니다. 계속하시겠습니까?')) return;
   const payload = pbCollectAllGroups();
@@ -322,6 +329,39 @@ function pbUpdateBulkBar() {
   const checked = document.querySelectorAll('#pb-points-tbody .pb-point-chk:checked');
   const bar = document.getElementById('pb-points-bulk');
   bar.hidden = checked.length === 0;
+  const cnt = document.getElementById('pb-points-selcount');
+  if (cnt) cnt.textContent = checked.length ? `${checked.length}개 선택` : '';
+}
+
+function pbSelectedPointIds() {
+  return Array.from(document.querySelectorAll('#pb-points-tbody .pb-point-chk:checked'))
+    .map(cb => parseInt(cb.value)).filter(n => !isNaN(n));
+}
+
+// 선택 태그를 realtime_table에 즉시 라이브로 편입
+async function pbRealtimeAdd() {
+  const ids = pbSelectedPointIds();
+  const ctrl = pbGetControllerId();
+  if (ids.length === 0) return;
+  if (!ctrl) { alert('컨트롤러를 선택해주세요.'); return; }
+  if (!confirm(`[${ctrl}] 선택한 ${ids.length}개를 실시간(realtime_table)에 추가합니다. 계속하시겠습니까?`)) return;
+  const res = await pbApi('/api/pointbuilder/realtime-add', 'POST', { ids, controllerId: ctrl });
+  alert(res.message || `${res.count}개 실시간 편입`);
+  pbRefresh();
+  pbLoadSummary();
+}
+
+// 선택 태그를 realtime_table에서 제거
+async function pbRealtimeRemove() {
+  const ids = pbSelectedPointIds();
+  const ctrl = pbGetControllerId();
+  if (ids.length === 0) return;
+  if (!ctrl) { alert('컨트롤러를 선택해주세요.'); return; }
+  if (!confirm(`[${ctrl}] 선택한 ${ids.length}개를 실시간(realtime_table)에서 제거합니다. 계속하시겠습니까?`)) return;
+  const res = await pbApi('/api/pointbuilder/realtime-remove', 'POST', { ids, controllerId: ctrl });
+  alert(res.message || `${res.count}개 실시간 제거`);
+  pbRefresh();
+  pbLoadSummary();
 }
 
 async function pbDeleteOne(id) {
@@ -333,19 +373,6 @@ async function pbDeleteOne(id) {
   }
 }
 
-async function pbBulkActivate(active) {
-  const ids = Array.from(document.querySelectorAll('#pb-points-tbody .pb-point-chk:checked'))
-    .map(cb => parseInt(cb.value));
-  const ctrl = pbGetControllerId();
-  if (ids.length === 0) return;
-  if (!confirm(`[${ctrl || '전체'}] 선택한 ${ids.length}개를 ${active ? '활성화' : '비활성화'}합니다. 계속하시겠습니까?`)) return;
-  const res = await pbApi('/api/hc900/tags/bulk-active', 'POST', { ids, active, controllerId: ctrl || undefined });
-  if (res) {
-    pbRefresh();
-    pbLoadSummary();
-  }
-}
-
 // ── Sinam xlsx 파싱 ────────────────────────────────────────────────────────────
 
 let _pbSinamBusy = false;
diff --git a/src/Hc900Crawler/wwwroot/panes/pb.html b/src/Hc900Crawler/wwwroot/panes/pb.html
index 9dc9f22..0af2b24 100644
--- a/src/Hc900Crawler/wwwroot/panes/pb.html
+++ b/src/Hc900Crawler/wwwroot/panes/pb.html
@@ -189,10 +189,11 @@
       <div id="pb-preview-area" class="pb-preview" style="display:none">
         <div class="pb-preview-header">
           <span>미리보기 <span id="pb-preview-count" style="color:var(--a)"></span></span>
-          <div class="pb-preview-actions">
+          <div class="pb-preview-actions" style="display:flex;align-items:center;gap:10px">
             <label style="font-size:12px;display:flex;align-items:center;gap:4px;cursor:pointer">
               <input type="checkbox" id="pb-chk-all-preview" onchange="pbToggleAllPreview(this)"> 전체 선택
             </label>
+            <button class="btn-c" style="padding:3px 10px;font-size:11px" onclick="pbClosePreview()">✕ 닫기</button>
           </div>
         </div>
         <div style="overflow-x:auto">
@@ -297,9 +298,10 @@
           <option value="exclude">실시간 제외</option>
         </select>
         <button class="btn-c" onclick="pbReload()" style="padding:3px 10px;font-size:11px">조회</button>
-        <div style="display:flex;gap:6px" id="pb-points-bulk" hidden>
-          <button class="btn-a" style="padding:3px 10px;font-size:11px" onclick="pbBulkActivate(true)">✓ 선택 활성화</button>
-          <button class="btn-b" style="padding:3px 10px;font-size:11px;background:#5a1a1a;color:#faa" onclick="pbBulkActivate(false)">✗ 선택 비활성화</button>
+        <div style="display:flex;gap:6px;align-items:center" id="pb-points-bulk" hidden>
+          <span id="pb-points-selcount" style="font-size:11px;color:var(--t2)"></span>
+          <button class="btn-a" style="padding:3px 10px;font-size:11px" onclick="pbRealtimeAdd()">＋ 실시간 추가</button>
+          <button class="btn-b" style="padding:3px 10px;font-size:11px;background:#5a1a1a;color:#faa" onclick="pbRealtimeRemove()">－ 실시간 제거</button>
         </div>
       </div>
     </div>
diff --git a/src/Infrastructure/Database/Hc900DbContext.cs b/src/Infrastructure/Database/Hc900DbContext.cs
index baac8f3..d2e5a3d 100644
--- a/src/Infrastructure/Database/Hc900DbContext.cs
+++ b/src/Infrastructure/Database/Hc900DbContext.cs
@@ -381,6 +381,72 @@ public class Hc900DbContext : DbContext
         }
     }
 
+    // 선택 태그(id)만 realtime_table에 편입(즉시 라이브). full-Sync 금지(전체 추가됨) → 선택분만 직접 insert.
+    public async Task<int> Hc900RealtimeAddByIdsAsync(string controllerId, IEnumerable<int> ids)
+    {
+        var idList = ids.Distinct().ToList();
+        if (idList.Count == 0) return 0;
+        using var tx = await Database.BeginTransactionAsync();
+        try
+        {
+            var entries = await Hc900MapEntries
+                .Where(x => idList.Contains(x.Id) && x.ControllerId == controllerId)
+                .ToListAsync();
+
+            // 폴링 대상화: is_active + realtime_enabled
+            foreach (var e in entries) { e.IsActive = true; e.RealtimeEnabled = true; }
+
+            // realtime_table에 없는 것만 직접 등록
+            var tagNames = entries.Select(e => e.TagName).ToList();
+            var existing = await RealtimePoints
+                .Where(r => r.ControllerId == controllerId && tagNames.Contains(r.TagName))
+                .Select(r => r.TagName).ToListAsync();
+            var toAdd = entries.Where(e => !existing.Contains(e.TagName))
+                .Select(e => new RealtimePoint
+                {
+                    ControllerId = controllerId,
+                    TagName      = e.TagName,
+                    NodeId       = e.Hc900Tag,
+                    LiveValue    = null,
+                    Timestamp    = DateTime.UtcNow,
+                });
+            RealtimePoints.AddRange(toAdd);
+
+            await SaveChangesAsync();
+            await tx.CommitAsync();
+            return entries.Count;
+        }
+        catch { await tx.RollbackAsync(); throw; }
+    }
+
+    // 선택 태그(id)만 realtime_table에서 제거. realtime_enabled=FALSE로 폴링 재추가 차단 + 행 직접 삭제.
+    public async Task<int> Hc900RealtimeRemoveByIdsAsync(string controllerId, IEnumerable<int> ids)
+    {
+        var idList = ids.Distinct().ToList();
+        if (idList.Count == 0) return 0;
+        using var tx = await Database.BeginTransactionAsync();
+        try
+        {
+            var entries = await Hc900MapEntries
+                .Where(x => idList.Contains(x.Id) && x.ControllerId == controllerId)
+                .ToListAsync();
+            var tagNames = entries.Select(e => e.TagName).ToList();
+
+            // 폴링이 다시 upsert하지 않도록 realtime_enabled 끄기
+            foreach (var e in entries) e.RealtimeEnabled = false;
+
+            var rows = await RealtimePoints
+                .Where(r => r.ControllerId == controllerId && tagNames.Contains(r.TagName))
+                .ToListAsync();
+            RealtimePoints.RemoveRange(rows);
+
+            await SaveChangesAsync();
+            await tx.CommitAsync();
+            return rows.Count;
+        }
+        catch { await tx.RollbackAsync(); throw; }
+    }
+
     public async Task<RealtimePoint> Hc900AddRealtimePointAsync(
         string tagName, string hc900Tag, int modbusAddr,
         string dataType, string? paramType, string access, string controllerId)