diff --git a/setups/frappy.py b/setups/frappy.py
index 2718eac..97607f4 100644
--- a/setups/frappy.py
+++ b/setups/frappy.py
@@ -34,6 +34,8 @@ devices = dict(
             'targets': {'se_mf': 20},
         },
         rotation_z = {
+            # possible names of the instruments main omega alias
+            # only one of these must be an alias, and this is then used
             'unique': ['a3', 'om'],
             'alias': 'dom',
             'targets': {'se_om': 20, 'se_stickrot': 19},
diff --git a/setups/frappy_addons.py b/setups/frappy_addons.py
index a698af2..14a94c1 100644
--- a/setups/frappy_addons.py
+++ b/setups/frappy_addons.py
@@ -5,7 +5,7 @@ group = 'optional'
 devices = {
     'se_addons':
         device('nicos_sinq.frappy_sinq.devices.FrappyNode',
-               description='SEC node', unit='',
+               description='SEC node', unit='', async_only=True,
                prefix='se_', auto_create=True, service='addons',
         ),
 }
diff --git a/setups/frappy_main.py b/setups/frappy_main.py
index 2d8be02..c182315 100644
--- a/setups/frappy_main.py
+++ b/setups/frappy_main.py
@@ -5,7 +5,7 @@ group = 'optional'
 devices = {
     'se_main':
         device('nicos_sinq.frappy_sinq.devices.FrappyNode',
-               description='main SEC node', unit='',
+               description='main SEC node', unit='', async_only=True,
                prefix='se_', auto_create=True, service='main',
         ),
 }
diff --git a/setups/frappy_stick.py b/setups/frappy_stick.py
index c09560c..28f45f2 100644
--- a/setups/frappy_stick.py
+++ b/setups/frappy_stick.py
@@ -5,7 +5,7 @@ group = 'optional'
 devices = {
     'se_stick':
         device('nicos_sinq.frappy_sinq.devices.FrappyNode',
-               description='stick SEC node', unit='',
+               description='stick SEC node', unit='', async_only=True,
                prefix='se_', auto_create=True, service='stick',
         ),
 }