diff --git a/aliases/bernina.py b/aliases/bernina.py
index aaf4cf5..ac3afee 100755
--- a/aliases/bernina.py
+++ b/aliases/bernina.py
@@ -181,6 +181,11 @@ aliases = {
                 'z_und' : 142,
                 'desc' : 'Streaking arrival time monitor',
                 'eco_type' : 'timing.palm.Palm'},
+        'SLAAR21-LMOT' : {
+                'alias' : 'Psen',
+                'z_und' : 142,
+                'desc' : 'Streaking arrival time monitor',
+                'eco_type' : 'timing.psen.Psen'}
 #         = dict(
 #            alias = ''
 #            z_und = 
diff --git a/timing/psen.py b/timing/psen.py
new file mode 100755
index 0000000..e9b3ba9
--- /dev/null
+++ b/timing/psen.py
@@ -0,0 +1,26 @@
+from ..devices_general.motors import MotorRecord
+from ..devices_general.smaract import SmarActRecord
+from epics import PV
+from ..devices_general.delay_stage import DelayStage
+
+class Psen:
+    def __init__(self,Id):
+        self.Id = Id
+  
+        self._delayStg = MotorRecord(self.Id+'-M561:MOT')
+        self.delay = DelayStage(self._delayStg)
+
+
+    def get_adjustable_positions_str(self):
+        ostr = '*****PSEN motor positions******\n'
+
+        for tkey,item in self.__dict__.items():
+            if hasattr(item,'get_current_value'):
+                pos = item.get_current_value()
+                ostr += '  ' + tkey.ljust(10) + ' : % 14g\n'%pos
+        return ostr
+                
+
+    def __repr__(self):
+        return self.get_adjustable_positions_str()
+