diff --git a/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/metadata/TbGetTelemetryNode.java b/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/metadata/TbGetTelemetryNode.java
index 4aabc606ab..2b87e80127 100644
--- a/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/metadata/TbGetTelemetryNode.java
+++ b/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/metadata/TbGetTelemetryNode.java
@@ -176,7 +176,7 @@ public class TbGetTelemetryNode implements TbNode {
             return getIntervalFromPatterns(msg);
         } else {
             Interval interval = new Interval();
-            long ts = System.currentTimeMillis();
+            long ts = getCurrentTimeMillis();
             interval.setStartTs(ts - TimeUnit.valueOf(config.getStartIntervalTimeUnit()).toMillis(config.getStartInterval()));
             interval.setEndTs(ts - TimeUnit.valueOf(config.getEndIntervalTimeUnit()).toMillis(config.getEndInterval()));
             return interval;
@@ -220,6 +220,10 @@ public class TbGetTelemetryNode implements TbNode {
         return limit;
     }
 
+    long getCurrentTimeMillis() {
+        return System.currentTimeMillis();
+    }
+
     @Data
     @NoArgsConstructor
     private static class Interval {
diff --git a/rule-engine/rule-engine-components/src/test/java/org/thingsboard/rule/engine/metadata/TbGetTelemetryNodeTest.java b/rule-engine/rule-engine-components/src/test/java/org/thingsboard/rule/engine/metadata/TbGetTelemetryNodeTest.java
index 2ad575f0aa..f958e13ab5 100644
--- a/rule-engine/rule-engine-components/src/test/java/org/thingsboard/rule/engine/metadata/TbGetTelemetryNodeTest.java
+++ b/rule-engine/rule-engine-components/src/test/java/org/thingsboard/rule/engine/metadata/TbGetTelemetryNodeTest.java
@@ -32,7 +32,6 @@ import org.thingsboard.rule.engine.TestDbCallbackExecutor;
 import org.thingsboard.rule.engine.api.TbContext;
 import org.thingsboard.rule.engine.api.TbNodeConfiguration;
 import org.thingsboard.rule.engine.api.TbNodeException;
-import org.thingsboard.rule.engine.api.util.TbNodeUtils;
 import org.thingsboard.server.common.data.id.DeviceId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
@@ -60,7 +59,9 @@ import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyList;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.BDDMockito.given;
+import static org.mockito.BDDMockito.spy;
 import static org.mockito.BDDMockito.then;
+import static org.mockito.BDDMockito.willReturn;
 
 @ExtendWith(MockitoExtension.class)
 public class TbGetTelemetryNodeTest {
@@ -80,7 +81,7 @@ public class TbGetTelemetryNodeTest {
 
     @BeforeEach
     public void setUp() {
-        node = new TbGetTelemetryNode();
+        node = spy(new TbGetTelemetryNode());
         config = new TbGetTelemetryNodeConfiguration().defaultConfiguration();
         config.setLatestTsKeyNames(List.of("temperature"));
     }
@@ -222,6 +223,8 @@ public class TbGetTelemetryNodeTest {
         // GIVEN
         node.init(ctxMock, new TbNodeConfiguration(JacksonUtil.valueToTree(config)));
 
+        long ts = System.currentTimeMillis();
+        willReturn(ts).given(node).getCurrentTimeMillis();
         mockTimeseriesService();
         given(timeseriesServiceMock.findAll(any(TenantId.class), any(EntityId.class), anyList())).willReturn(Futures.immediateFuture(Collections.emptyList()));
 
@@ -233,8 +236,8 @@ public class TbGetTelemetryNodeTest {
         ArgumentCaptor<List<ReadTsKvQuery>> actualReadTsKvQueryList = ArgumentCaptor.forClass(List.class);
         then(timeseriesServiceMock).should().findAll(eq(TENANT_ID), eq(DEVICE_ID), actualReadTsKvQueryList.capture());
         ReadTsKvQuery actualReadTsKvQuery = actualReadTsKvQueryList.getValue().get(0);
-        assertThat(actualReadTsKvQuery.getStartTs()).isLessThan(System.currentTimeMillis() - TimeUnit.MINUTES.toMillis(config.getStartInterval()));
-        assertThat(actualReadTsKvQuery.getEndTs()).isLessThan(System.currentTimeMillis() - TimeUnit.MINUTES.toMillis(config.getEndInterval()));
+        assertThat(actualReadTsKvQuery.getStartTs()).isEqualTo(ts - TimeUnit.MINUTES.toMillis(config.getStartInterval()));
+        assertThat(actualReadTsKvQuery.getEndTs()).isEqualTo(ts - TimeUnit.MINUTES.toMillis(config.getEndInterval()));
     }
 
     @Test
@@ -257,8 +260,7 @@ public class TbGetTelemetryNodeTest {
         ArgumentCaptor<List<ReadTsKvQuery>> actualReadTsKvQueryList = ArgumentCaptor.forClass(List.class);
         then(timeseriesServiceMock).should().findAll(eq(TENANT_ID), eq(DEVICE_ID), actualReadTsKvQueryList.capture());
         List<String> actualKeys = actualReadTsKvQueryList.getValue().stream().map(TsKvQuery::getKey).toList();
-        List<String> expectedTsKeyNames = config.getLatestTsKeyNames().stream().map(tsKeyName -> TbNodeUtils.processPattern(tsKeyName, msg)).toList();
-        assertThat(actualKeys).containsAll(expectedTsKeyNames);
+        assertThat(actualKeys).containsAll(List.of("temperature", "humidity", "pressure"));
     }
 
     @ParameterizedTest
@@ -325,6 +327,10 @@ public class TbGetTelemetryNodeTest {
                 Arguments.of(
                         TbGetTelemetryNodeConfiguration.FETCH_MODE_FIRST,
                         TbGetTelemetryNodeConfiguration.MAX_FETCH_SIZE,
+                        (Consumer<ReadTsKvQuery>) query -> assertThat(query.getLimit()).isEqualTo(1)),
+                Arguments.of(
+                        TbGetTelemetryNodeConfiguration.FETCH_MODE_LAST,
+                        10,
                         (Consumer<ReadTsKvQuery>) query -> assertThat(query.getLimit()).isEqualTo(1))
         );
     }
@@ -424,9 +430,11 @@ public class TbGetTelemetryNodeTest {
         assertThat(actualMsg.getValue()).usingRecursiveComparison().ignoringFields("ctx").isEqualTo(expectedMsg);
     }
 
-    @Test
-    public void givenFetchModeIsFirst_whenOnMsg_thenTellSuccessAndVerifyMsg() throws TbNodeException {
+    @ParameterizedTest
+    @ValueSource(strings = {"FIRST", "LAST"})
+    public void givenFetchMode_whenOnMsg_thenTellSuccessAndVerifyMsg(String fetchMode) throws TbNodeException {
         // GIVEN
+        config.setFetchMode(fetchMode);
         config.setLatestTsKeyNames(List.of("temperature", "humidity"));
 
         node.init(ctxMock, new TbNodeConfiguration(JacksonUtil.valueToTree(config)));