diff --git a/artiq/dashboard/moninj.py b/artiq/dashboard/moninj.py
index db8bb78b7..9674ddb98 100644
--- a/artiq/dashboard/moninj.py
+++ b/artiq/dashboard/moninj.py
@@ -34,6 +34,8 @@ class _TTLWidget(QtWidgets.QFrame):
         self.setFrameShape(QtWidgets.QFrame.Box)
         self.setFrameShadow(QtWidgets.QFrame.Raised)
 
+        self.uid = title
+
         grid = QtWidgets.QGridLayout()
         grid.setContentsMargins(2, 2, 2, 2)
         grid.setHorizontalSpacing(2)
@@ -112,6 +114,7 @@ class _TTLHandler:
         self.force_out = force_out
         self.set_mode = dm.ttl_set_mode
         self.title = title
+        self.uid = title
         self.cur_level = False
         self.cur_oe = False
         self.cur_override = False
@@ -165,6 +168,8 @@ class _DDSWidget(QtWidgets.QFrame):
     def __init__(self, title, is_urukul):
         QtWidgets.QFrame.__init__(self)
 
+        self.uid = title
+
         self.setFrameShape(QtWidgets.QFrame.Box)
         self.setFrameShadow(QtWidgets.QFrame.Raised)
 
@@ -282,6 +287,7 @@ class _DDSHandler:
                  ref_clk, cpld=None, pll=1, clk_div=0):
         self.dm = dm
         self.title = title
+        self.uid = title
         self.bus_channel = bus_channel
         self.channel = channel
         self.cur_frequency = 0
@@ -351,6 +357,8 @@ class _DACWidget(QtWidgets.QFrame):
     def __init__(self, channel, title):
         QtWidgets.QFrame.__init__(self)
 
+        self.uid = (title, channel)
+
         self.setFrameShape(QtWidgets.QFrame.Box)
         self.setFrameShadow(QtWidgets.QFrame.Raised)
 
@@ -378,6 +386,7 @@ class _DACHandler:
         self.spi_channel = spi_channel
         self.channel = channel
         self.title = title
+        self.uid = (title, channel)
 
     def create_widget(self):
         self.widget = _DACWidget(self.channel, self.title)