diff --git a/siriuspy/siriuspy/devices/idff.py b/siriuspy/siriuspy/devices/idff.py
index f18e2d3b4..75225c506 100644
--- a/siriuspy/siriuspy/devices/idff.py
+++ b/siriuspy/siriuspy/devices/idff.py
@@ -218,7 +218,8 @@ def check_valid_value(self, value):
                     'List of corrlabels in config is not consistent')
 
             # check nrpts in tables
-            param = 'pparameter' if polarization == 'none' else 'kparameter'
+            pol_none = _IDSearch.POL_NONE_STR
+            param = 'pparameter' if polarization == pol_none else 'kparameter'
             nrpts_corrtables = {len(table) for table in corrtable.values()}
             nrpts_kparameter = set([len(table[param]), ])
             symm_diff = nrpts_corrtables ^ nrpts_kparameter
diff --git a/siriuspy/siriuspy/idff/config.py b/siriuspy/siriuspy/idff/config.py
index 47edacf26..71165968c 100644
--- a/siriuspy/siriuspy/idff/config.py
+++ b/siriuspy/siriuspy/idff/config.py
@@ -96,7 +96,7 @@ def calculate_setpoints(
         if self._value:
             setpoints = dict()
             idff = self._value['polarizations'][polarization]
-            if polarization == 'none':
+            if polarization == _IDSearch.POL_NONE_STR:
                 params = idff['pparameter']
                 param_value = pparameter_value
             else:
@@ -248,7 +248,8 @@ def check_valid_value(self, value):
                     'List of corrlabels in config is not consistent')
 
             # check nrpts in tables
-            param = 'pparameter' if polarization == 'none' else 'kparameter'
+            pol_none = _IDSearch.POL_NONE_STR
+            param = 'pparameter' if polarization == pol_none else 'kparameter'
             nrpts_corrtables = {len(table) for table in corrtable.values()}
             nrpts_kparameter = set([len(table[param]), ])
             symm_diff = nrpts_corrtables ^ nrpts_kparameter
diff --git a/siriuspy/siriuspy/idff/csdev.py b/siriuspy/siriuspy/idff/csdev.py
index e65de0f90..ee257a048 100644
--- a/siriuspy/siriuspy/idff/csdev.py
+++ b/siriuspy/siriuspy/idff/csdev.py
@@ -47,6 +47,7 @@ def __init__(self, idname):
         fname = fname.lower()
         self.autosave_fname = _os.path.join(ioc_fol, fname+'.txt')
         qsnames = _IDSearch.conv_idname_2_idff_qsnames(idname)
+        self.pol_sts = _IDSearch.conv_idname_2_polarizations_sts(self.idname)
         self.has_qscorrs = True if qsnames else False
 
     def get_propty_database(self):
@@ -70,7 +71,9 @@ def get_propty_database(self):
                 'unit': 'Hz', 'prec': 3,
                 'lolim': self.DEFAULT_LOOP_FREQ_MIN,
                 'hilim': self.DEFAULT_LOOP_FREQ_MAX},
-            'Polarization-Mon': {'type': 'string', 'value': 'none'},
+            'Polarization-Mon': {
+                'type': 'enum', 'enums': self.pols_sts,
+                'value': self.pols_sts.index(_IDSearch.POL_UNDEF_STR)},
             'ConfigName-SP': {'type': 'string', 'value': ''},
             'ConfigName-RB': {'type': 'string', 'value': ''},
             'CorrConfig-Cmd': {'type': 'int', 'value': 0},
diff --git a/siriuspy/siriuspy/idff/main.py b/siriuspy/siriuspy/idff/main.py
index 85f8af76e..d70fc04a8 100644
--- a/siriuspy/siriuspy/idff/main.py
+++ b/siriuspy/siriuspy/idff/main.py
@@ -5,8 +5,7 @@
 import time as _time
 
 import epics as _epics
-import numpy as _np
-
+from ..search import IDSearch as _IDSearch
 from ..util import update_bit as _updt_bit
 from ..callbacks import Callback as _Callback
 from ..clientconfigdb import ConfigDBException as _ConfigDBException
@@ -30,7 +29,7 @@ def __init__(self, idname):
         self._loop_state = _Const.DEFAULT_LOOP_STATE
         self._loop_freq = _Const.DEFAULT_LOOP_FREQ
         self._control_qs = _Const.DEFAULT_CONTROL_QS
-        self._polarization = 'none'
+        self._polarization = self._const.pol_sts.index(_IDSearch.POL_UNDEF_STR)
         self._config_name = ''
         self.read_autosave_file()
 
@@ -291,9 +290,16 @@ def _do_sleep(self, time0, tplanned):
 
     def _do_update_polarization(self):
         new_pol, *_ = self._idff.get_polarization_state()
-        if new_pol is not None and new_pol != self._polarization:
-            self._polarization = new_pol
-            self.run_callbacks('Polarization-Mon', new_pol)
+        if new_pol is None:
+            self._update_log('ERR: new polarization is None')
+            return
+        try:
+            new_pol_idx = self._const.pol_sts.index(new_pol)
+        except ValueError:
+            self._update_log('ERR: could not find index of polarization')
+        if new_pol_idx != self._polarization:
+            self._polarization = new_pol_idx
+            self.run_callbacks('Polarization-Mon', new_pol_idx)
 
     def _do_update_correctors(self):
         try:
@@ -306,7 +312,7 @@ def _do_update_correctors(self):
             # print('setpoints: ', setpoints)
             # print()
         except ValueError as err:
-            self._update_log('ERR:'+str(err))
+            self._update_log('ERR: ' + str(err))
 
     def _do_implement_correctors(self):
         corrdevs = None