diff --git a/changelog.md b/changelog.md
index 4abbacfc..ffdb2c51 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,6 +1,7 @@
 # Version 2024.10.7 (2024-10-12)
 
 - Improve profile validation
+- Use regex to identify schedule profiles
 
 # Version 2024.10.6 (2024-10-11)
 
diff --git a/hahomematic/const.py b/hahomematic/const.py
index b8730db1..c0272f90 100644
--- a/hahomematic/const.py
+++ b/hahomematic/const.py
@@ -47,6 +47,10 @@
 DEVICE_ADDRESS_PATTERN: Final = re.compile(r"^[0-9a-zA-Z-]{5,20}$")
 ALLOWED_HOSTNAME_PATTERN: Final = re.compile(r"(?!-)[a-z0-9-]{1,63}(?<!-)$", re.IGNORECASE)
 HTMLTAG_PATTERN: Final = re.compile(r"<.*?>|&([a-z0-9]+|#[0-9]{1,6}|#x[0-9a-f]{1,6});")
+SCHEDULER_PROFILE_PATTERN = re.compile(
+    r"^P[1-6]_(ENDTIME|TEMPERATURE)_(MONDAY|TUESDAY|WEDNESDAY|THURSDAY|FRIDAY|SATURDAY|SUNDAY)_(1[0-3]|[1-9])"
+)
+SCHEDULER_TIME_PATTERN = re.compile(r"^(([0-1]{0,1}[0-9])|(2[0-4])):[0-5][0-9]")
 
 HUB_PATH: Final = "hub"
 BLOCK_LOG_TIMEOUT = 60
diff --git a/hahomematic/platforms/custom/climate.py b/hahomematic/platforms/custom/climate.py
index 7309fbd3..7542f354 100644
--- a/hahomematic/platforms/custom/climate.py
+++ b/hahomematic/platforms/custom/climate.py
@@ -12,7 +12,12 @@
 import logging
 from typing import Any, Final, cast
 
-from hahomematic.const import HmPlatform, ParamsetKey
+from hahomematic.const import (
+    SCHEDULER_PROFILE_PATTERN,
+    SCHEDULER_TIME_PATTERN,
+    HmPlatform,
+    ParamsetKey,
+)
 from hahomematic.exceptions import ClientException, HaHomematicException, ValidationException
 from hahomematic.platforms import device as hmd
 from hahomematic.platforms.custom import definition as hmed
@@ -36,6 +41,8 @@
 # HA constants
 _CLOSED_LEVEL: Final = 0.0
 _DEFAULT_TEMPERATURE_STEP: Final = 0.5
+_MAX_SCHEDULER_TIME: Final = "24:00"
+_MIN_SCHEDULER_TIME: Final = "00:00"
 _OFF_TEMPERATURE: Final = 4.5
 _PARTY_DATE_FORMAT: Final = "%Y_%m_%d %H:%M"
 _PARTY_INIT_DATE: Final = "2000_01_01 00:00"
@@ -341,21 +348,21 @@ async def _get_schedule(
                 f"Schedule is not supported by device {self._device.name}"
             ) from cex
 
-        for line, slot_value in raw_schedule.items():
-            if not line.startswith("P"):
+        for slot_name, slot_value in raw_schedule.items():
+            if SCHEDULER_PROFILE_PATTERN.match(slot_name) is None:
                 continue
-            line_split = line.split("_")
-            if len(line_split) != 4:
+            slot_name_tuple = slot_name.split("_")
+            if len(slot_name_tuple) != 4:
                 continue
-            p, et, w, no = line_split
-            _profile = ScheduleProfile(p)
+            profile_name, slot_type, slot_weekday, slot_no = slot_name_tuple
+            _profile = ScheduleProfile(profile_name)
             if profile and profile != _profile:
                 continue
-            _slot_type = ScheduleSlotType(et)
-            _weekday = ScheduleWeekday(w)
+            _slot_type = ScheduleSlotType(slot_type)
+            _weekday = ScheduleWeekday(slot_weekday)
             if weekday and weekday != _weekday:
                 continue
-            _slot_no = int(no)
+            _slot_no = int(slot_no)
 
             _add_to_schedule_data(
                 schedule_data=schedule_data,
@@ -465,7 +472,7 @@ def _validate_and_convert_simple_to_profile_weekday(
         sorted_simple_weekday_list = _sort_simple_weekday_list(
             simple_weekday_list=simple_weekday_list
         )
-        previous_endtime = "00:00"
+        previous_endtime = _MIN_SCHEDULER_TIME
         slot_no = 1
         for slot in sorted_simple_weekday_list:
             if (starttime := slot.get(ScheduleSlotType.STARTTIME)) is None:
@@ -915,16 +922,24 @@ def _profiles(self) -> Mapping[HmPresetMode, int]:
         return profiles
 
 
-def _convert_minutes_to_time_str(minutes: int) -> str:
+def _convert_minutes_to_time_str(minutes: Any) -> str:
     """Convert minutes to a time string."""
-    try:
-        return f"{minutes//60:0=2}:{minutes%60:0=2}"
-    except Exception as ex:
-        raise ValidationException(ex) from ex
+    if not isinstance(minutes, int):
+        return _MAX_SCHEDULER_TIME
+    time_str = f"{minutes//60:0=2}:{minutes%60:0=2}"
+    if SCHEDULER_TIME_PATTERN.match(time_str) is None:
+        raise ValidationException(
+            f"Time {time_str} is not valid. Format must be hh:mm with min: {_MIN_SCHEDULER_TIME} and max: {_MAX_SCHEDULER_TIME}"
+        )
+    return time_str
 
 
 def _convert_time_str_to_minutes(time_str: str) -> int:
     """Convert minutes to a time string."""
+    if SCHEDULER_TIME_PATTERN.match(time_str) is None:
+        raise ValidationException(
+            f"Time {time_str} is not valid. Format must be hh:mm with min: {_MIN_SCHEDULER_TIME} and max: {_MAX_SCHEDULER_TIME}"
+        )
     try:
         h, m = time_str.split(":")
         return (int(h) * 60) + int(m)
@@ -950,7 +965,7 @@ def _fillup_weekday_data(base_temperature: float, weekday_data: WEEKDAY_DICT) ->
     for slot_no in SCHEDULE_SLOT_IN_RANGE:
         if slot_no not in weekday_data:
             weekday_data[slot_no] = {
-                ScheduleSlotType.ENDTIME: "24:00",
+                ScheduleSlotType.ENDTIME: _MAX_SCHEDULER_TIME,
                 ScheduleSlotType.TEMPERATURE: base_temperature,
             }
 
@@ -964,12 +979,13 @@ def _get_raw_paramset(schedule_data: _SCHEDULE_DICT) -> _RAW_SCHEDULE_DICT:
         for weekday, weekday_data in profile_data.items():
             for slot_no, slot in weekday_data.items():
                 for slot_type, slot_value in slot.items():
+                    raw_profile_name = f"{str(profile)}_{str(slot_type)}_{str(weekday)}_{slot_no}"
+                    if SCHEDULER_PROFILE_PATTERN.match(raw_profile_name) is None:
+                        raise ValidationException(f"Not a valid profile name: {raw_profile_name}")
                     raw_value: float | int = cast(float | int, slot_value)
                     if slot_type == ScheduleSlotType.ENDTIME and isinstance(slot_value, str):
                         raw_value = _convert_time_str_to_minutes(slot_value)
-                    raw_paramset[f"{str(profile)}_{str(slot_type)}_{str(weekday)}_{slot_no}"] = (
-                        raw_value
-                    )
+                    raw_paramset[raw_profile_name] = raw_value
     return raw_paramset
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 9f5496e3..6f339d09 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools~=69.2.0", "wheel~=0.43.0"]
+requires = ["setuptools==75.1.0"]
 build-backend = "setuptools.build_meta"
 
 [project]
diff --git a/tests/test_support.py b/tests/test_support.py
index f45daca1..15953fec 100644
--- a/tests/test_support.py
+++ b/tests/test_support.py
@@ -14,6 +14,8 @@
 from hahomematic.client import Client
 from hahomematic.const import (
     INIT_DATETIME,
+    SCHEDULER_PROFILE_PATTERN,
+    SCHEDULER_TIME_PATTERN,
     VIRTUAL_REMOTE_ADDRESSES,
     EntityUsage,
     ParameterType,
@@ -603,3 +605,23 @@ def test_is_channel_address() -> None:
     assert is_channel_address("ABcdEFghIJ1234567890:123") is True
     assert is_channel_address("12345678901234567890:123") is True
     assert is_channel_address("123456789012345678901:123") is False
+
+
+def test_scheduler_profile_pattern() -> None:
+    """Test the SCHEDULER_PROFILE_PATTERN."""
+    assert SCHEDULER_PROFILE_PATTERN.match("P1_TEMPERATURE_THURSDAY_13")
+    assert SCHEDULER_PROFILE_PATTERN.match("P1_ENDTIME_THURSDAY_13")
+    assert SCHEDULER_PROFILE_PATTERN.match("P1_ENDTIME_THURSDAY_3")
+    assert SCHEDULER_PROFILE_PATTERN.match("Px_ENDTIME_THURSDAY_13") is None
+    assert SCHEDULER_PROFILE_PATTERN.match("P3_ENDTIME_THURSDAY_19") is None
+
+
+def test_scheduler_time_pattern() -> None:
+    """Test the SCHEDULER_TIME_PATTERN."""
+    assert SCHEDULER_TIME_PATTERN.match("00:00")
+    assert SCHEDULER_TIME_PATTERN.match("01:15")
+    assert SCHEDULER_TIME_PATTERN.match("23:59")
+    assert SCHEDULER_TIME_PATTERN.match("24:00")
+    assert SCHEDULER_TIME_PATTERN.match("5:00")
+    assert SCHEDULER_TIME_PATTERN.match("25:00") is None
+    assert SCHEDULER_TIME_PATTERN.match("F:00") is None