diff --git a/src/entities/current/types.ts b/src/entities/current/types.ts
index bfa31cf..bf97b7c 100644
--- a/src/entities/current/types.ts
+++ b/src/entities/current/types.ts
@@ -1,7 +1,7 @@
 export type CurrentItem = {
   edge: string;
   tag: string;
-  value: number;
+  value: number | null;
   createdAt: string;
   updatedAt: string;
   time: string;
diff --git a/src/features/edge-detail/components/ArchiveView.tsx b/src/features/edge-detail/components/ArchiveView.tsx
index 9c5909d..ce4dbfd 100644
--- a/src/features/edge-detail/components/ArchiveView.tsx
+++ b/src/features/edge-detail/components/ArchiveView.tsx
@@ -5,7 +5,7 @@ import { CalendarDays, CalendarClock, Check, ChevronDown, Clock3, DatabaseZap, S
 import type { CurrentItem } from '../../../entities/current/types';
 import { HistoryChart } from '../../../features/history-chart/HistoryChart';
 import { RANGE_PRESETS, createRange, type DateRangeState } from '../../../features/history/dateRange';
-import { toIsoFromInput } from '../../../utils/format';
+import { formatNumber, toIsoFromInput } from '../../../utils/format';
 import type { HistoryGranularity } from '../../../utils/historyGranularity';
 
 type ArchiveViewProps = {
@@ -191,7 +191,7 @@ export function ArchiveView({
                       {label !== item.tag ? <small>{item.tag}</small> : null}
                     </span>
                     <span className="tag-select-item__side">
-                      <strong>{item.value.toLocaleString('ru-RU', { maximumFractionDigits: item.precision ?? 3 })}</strong>
+                      <strong>{formatNumber(item.value)}</strong>
                       {selected ? <Check size={15} /> : null}
                     </span>
                   </button>
diff --git a/src/features/electrical-schematics/ElectricalNode.tsx b/src/features/electrical-schematics/ElectricalNode.tsx
index 3b51f56..bf9dfb7 100644
--- a/src/features/electrical-schematics/ElectricalNode.tsx
+++ b/src/features/electrical-schematics/ElectricalNode.tsx
@@ -29,8 +29,8 @@ export function ElectricalNode({ liveValues, node, ownerEdgeId }: ElectricalNode
       ? getLiveValue(liveValues, node.edgeId || ownerEdgeId, node.tagId)
       : getLiveValue(liveValues, bindingEdgeId, bindings?.stateTagId);
   const alarmValue = node.kind === 'decoration' ? getLiveValue(liveValues, bindingEdgeId, bindings?.alarmTagId) : undefined;
-  const alarmActive = Boolean(alarmValue && Number(alarmValue.value) !== 0);
-  const stateActive = Boolean(mainValue && Number(mainValue.value) !== 0);
+  const alarmActive = Boolean(alarmValue && alarmValue.value !== null && alarmValue.value !== 0);
+  const stateActive = Boolean(mainValue && mainValue.value !== null && mainValue.value !== 0);
   const title = getNodeTitle(node, mainValue);
   const style: CSSProperties = {
     left: node.position.x,
diff --git a/src/utils/format.ts b/src/utils/format.ts
index 2f27483..e5e81f2 100644
--- a/src/utils/format.ts
+++ b/src/utils/format.ts
@@ -1,7 +1,7 @@
 /** Форматирует числовое значение показателя для карточек и мини-плиток. */
-export function formatNumber(value: number): string {
-  if (!Number.isFinite(value)) {
-    return '-';
+export function formatNumber(value: number | null): string {
+  if (value === null || !Number.isFinite(value)) {
+    return '—';
   }
 
   return new Intl.NumberFormat('ru-RU', {
diff --git a/src/utils/metricStatus.ts b/src/utils/metricStatus.ts
index 10be0bd..6c246d4 100644
--- a/src/utils/metricStatus.ts
+++ b/src/utils/metricStatus.ts
@@ -16,8 +16,9 @@ function isConfiguredLimit(value: number | null): value is number {
 export function getMetricStatus(item: CurrentItem, now = Date.now()): MetricStatusInfo {
   const measuredAt = new Date(item.time).getTime();
   const ageSeconds = Number.isFinite(measuredAt) ? Math.max(0, Math.round((now - measuredAt) / 1000)) : Number.POSITIVE_INFINITY;
-  const belowMin = isConfiguredLimit(item.min) && item.value < item.min;
-  const aboveMax = isConfiguredLimit(item.max) && item.value > item.max;
+  const value = item.value;
+  const belowMin = isConfiguredLimit(value) && isConfiguredLimit(item.min) && value < item.min;
+  const aboveMax = isConfiguredLimit(value) && isConfiguredLimit(item.max) && value > item.max;
 
   if (belowMin || aboveMax) {
     return { status: 'critical', label: 'за пределами уставки', ageSeconds };