diff --git a/base.py b/base.py
index 0b4b3cf..aff728e 100644
--- a/base.py
+++ b/base.py
@@ -453,6 +453,9 @@ def start_heart_rate_realtime(self, heart_measure_callback):
                 t = time.time()
 
     def start_raw_data_realtime(self, heart_measure_callback=None, heart_raw_callback=None, accel_raw_callback=None):
+        char_sensor1 = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_HZ)[0]
+        char_sens_d1 = char_sensor1.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
+
         char_m = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_MEASURE)[0]
         char_d = char_m.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
         char_ctrl = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_CONTROL)[0]
@@ -465,41 +468,23 @@ def start_raw_data_realtime(self, heart_measure_callback=None, heart_raw_callbac
             self.accel_raw_callback = accel_raw_callback
 
         char_sensor = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_SENSOR)[0]
-        # char_sens_d = char_sensor1.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
-
-        # char_sensor2 = self.svc_1.getCharacteristics('000000010000351221180009af100700')[0]
-        # char_sens_d2 = char_sensor2.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
-
-        # char_sensor3 = self.svc_1.getCharacteristics('000000070000351221180009af100700')[0]
-        # char_sens_d3 = char_sensor3.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
-
-        # char_sens_d1.write(b'\x01\x00', True)
-        # char_sens_d2.write(b'\x01\x00', True)
-        # char_sensor2.write(b'\x01\x03\x19')
-        # char_sens_d2.write(b'\x00\x00', True)
-        # char_d.write(b'\x01\x00', True)
-        # char_ctrl.write(b'\x15\x01\x01', True)
-        # char_sensor2.write(b'\x02')
 
-        # stop heart monitor continues & manual
         char_ctrl.write(b'\x15\x02\x00', True)
         char_ctrl.write(b'\x15\x01\x00', True)
-        # WTF
-        # char_sens_d1.write(b'\x01\x00', True)
-        # enabling accelerometer & heart monitor raw data notifications
+        char_sens_d1.write(b'\x01\x00', True)
         char_sensor.write(b'\x01\x03\x19')
-        # IMO: enablee heart monitor notifications
         char_d.write(b'\x01\x00', True)
-        # start hear monitor continues
         char_ctrl.write(b'\x15\x01\x01', True)
-        # WTF
         char_sensor.write(b'\x02')
+
         t = time.time()
         while True:
             self.waitForNotifications(0.5)
             self._parse_queue()
             # send ping request every 12 sec
             if (time.time() - t) >= 12:
+                char_sensor.write(b'\x01\x03\x19')
+                char_sensor.write(b'\x02')
                 char_ctrl.write(b'\x16', True)
                 t = time.time()