diff --git a/src/meter/um24c.py b/src/meter/um24c.py
index 73367cf..afb374a 100644
--- a/src/meter/um24c.py
+++ b/src/meter/um24c.py
@@ -144,10 +144,19 @@ def send_command(command):
 def get_meter_stats():
     global rfcomm
     rfcomm.send(Command.GET_STATUS.value)
-    sleep(0.25)
+    sleep(0.30)
+
+    # data = rfcomm.recv(0x8f)
     data = rfcomm.recv(0x8f)
-    # assert len(data) == 130
-    # assert data[0:2] == PACKET_MAGIC[0] and data[-2:] == PACKET_MAGIC[1]
+
+    if PACKET_MAGIC[0] not in data or PACKET_MAGIC[1] not in data:
+        return
+    pkt_start = data.index(PACKET_MAGIC[0])
+    pkt_end = data.index(PACKET_MAGIC[1])
+    if pkt_end - pkt_start != 128:
+        return
+
+    data = data[pkt_start:pkt_end+2]
     try:
         values = list(unpack(DATA_FORMAT, data))
         for i, value in enumerate(values):
diff --git a/src/um24clab.py b/src/um24clab.py
index c89d291..de9d4ae 100644
--- a/src/um24clab.py
+++ b/src/um24clab.py
@@ -3,7 +3,7 @@ import sys
 import traceback
 
 from PySide2.QtCore import (
-    Qt, QTimer, QObject, Signal, Slot, QRunnable, QThreadPool
+    Qt, QObject, Signal, Slot, QRunnable, QThreadPool
 )
 from PySide2.QtWidgets import (
     QApplication, QMainWindow
@@ -89,7 +89,7 @@ class UM24LabWorker(UM24LabUIWorker):
         while um24c.is_connected():
             try:
                 result = self.fn(*self.args, **self.kwargs)
-                # self.signals.progress.emit(result)
+                self.signals.progress.emit(result)
             except Exception:
                 traceback.print_exc()
                 exctype, value = sys.exc_info()[:2]
@@ -251,17 +251,14 @@ class UM24Lab(QMainWindow):
     def action_connect_device(self):
         worker = UM24LabUIWorker(self.do_connect_device)
         worker.signals.result.connect(self.connect_device_result)
-        # worker.signals.finished.connect(...)
-        # worker.signals.progress.connect(...)
         self.threadpool.start(worker)
 
     def do_update_stats(self, progress_callback):
-        while um24c.is_connected:
-            current = um24c.get_meter_stats()
-            progress_callback.emit(current)
+        return um24c.get_meter_stats()
 
     def update_stats_progress(self, current):
         self.meter_stats = current
+        self.update_graphs()
 
     def update_stats_finished(self):
         ui = self.ui