diff --git a/src/bsblan/models.py b/src/bsblan/models.py
index ac6ca63c..33812a14 100644
--- a/src/bsblan/models.py
+++ b/src/bsblan/models.py
@@ -216,6 +216,7 @@ class DataType(IntEnum):
     DATE = 6  # Day and month
     STRING = 7  # String value
     PPS_TIME = 8  # PPS time (day of week, hour:minute)
+    TIMEPROG = 9  # Time program (schedule slots)
 
 
 def _convert_bsblan_value(
@@ -528,6 +529,15 @@ class HotWaterSchedule(BaseModel):
     This class contains time program settings that are typically
     configured once and rarely changed.
 
+    The daily time programs (Monday-Sunday) use BSB-LAN dataType 9
+    (TIMEPROG) and return schedule strings like
+    ``"13:00-15:00 ##:##-##:## ##:##-##:##"`` where ``##:##`` marks
+    unused time slots.
+
+    ``dhw_time_program_standard_values`` is a YESNO enum (0=No, 1=Yes)
+    that resets all daily schedules back to the controller's factory
+    defaults when set to Yes. It is typically read-only via the API.
+
     Note:
         This is for READING from the device. For WRITING time programs,
         use SetHotWaterParam with set_hot_water().
@@ -541,6 +551,7 @@ class HotWaterSchedule(BaseModel):
     dhw_time_program_friday: EntityInfo[str | int] | None = None
     dhw_time_program_saturday: EntityInfo[str | int] | None = None
     dhw_time_program_sunday: EntityInfo[str | int] | None = None
+    # YESNO enum: resets all daily schedules to factory defaults when Yes (1)
     dhw_time_program_standard_values: EntityInfo[int] | None = None
 
 
diff --git a/tests/test_entity_info.py b/tests/test_entity_info.py
index e535630e..323bd61d 100644
--- a/tests/test_entity_info.py
+++ b/tests/test_entity_info.py
@@ -222,3 +222,44 @@ def test_entity_info_string_plain_text_not_parsed() -> None:
 
     assert entity.value == "1.0.38-20200730"
     assert entity.unit == ""
+
+
+def test_entity_info_timeprog_schedule_string() -> None:
+    """Test TIMEPROG value with active and unused slots is kept as string."""
+    entity = EntityInfo(
+        name="Monday",
+        value="13:00-15:00 ##:##-##:## ##:##-##:##",
+        unit="",
+        desc="",
+        data_type=DataType.TIMEPROG,
+    )
+
+    assert entity.value == "13:00-15:00 ##:##-##:## ##:##-##:##"
+    assert entity.data_type == DataType.TIMEPROG
+
+
+def test_entity_info_timeprog_multiple_slots() -> None:
+    """Test TIMEPROG value with multiple active time slots."""
+    entity = EntityInfo(
+        name="Tuesday",
+        value="06:00-08:00 17:00-21:00 ##:##-##:##",
+        unit="",
+        desc="",
+        data_type=DataType.TIMEPROG,
+    )
+
+    assert entity.value == "06:00-08:00 17:00-21:00 ##:##-##:##"
+    assert entity.data_type == DataType.TIMEPROG
+
+
+def test_entity_info_timeprog_inactive() -> None:
+    """Test TIMEPROG with '---' (inactive/not in use) returns None."""
+    entity = EntityInfo(
+        name="Sunday",
+        value="---",
+        unit="",
+        desc="",
+        data_type=DataType.TIMEPROG,
+    )
+
+    assert entity.value is None