Index: dialin/hd/air_bubbles.py
===================================================================
diff -u -r801527f052cc3ca768d768401164c0072892442d -r026abe7a8fa396fd21e5faa15af34b2d3587363d
--- dialin/hd/air_bubbles.py	(.../air_bubbles.py)	(revision 801527f052cc3ca768d768401164c0072892442d)
+++ dialin/hd/air_bubbles.py	(.../air_bubbles.py)	(revision 026abe7a8fa396fd21e5faa15af34b2d3587363d)
@@ -65,7 +65,7 @@
         # Initialize state of ADA and ADV air bubble detectors state machine to init
         self.air_bubbles_state = [self.AIR_BUBBLE_INIT_STATE, self.AIR_BUBBLE_INIT_STATE]
 
-    def get_air_bubble_status(self, index):
+    def get_air_bubble_status(self, index: int) -> int:
         """
         Gets the given air bubble status using index 0 for ADA and index 1 for ADV.
 
@@ -97,7 +97,7 @@
         self.air_bubbles_status = [statusADA[0], statusADV[0]]
         self.air_bubbles_state = [stateADA[0], stateADV[0]]
 
-    def cmd_air_bubble_status_override(self, status, index, reset=NO_RESET):
+    def cmd_air_bubble_status_override(self, status: int, index: int, reset: int = NO_RESET) -> int:
         """
         Constructs and sends the air bubble detector status override command
         Constraints:
@@ -135,7 +135,7 @@
             self.logger.debug("Timeout!!!!")
             return False
 
-    def cmd_air_bubble_self_test_request(self, index):
+    def cmd_air_bubble_self_test_request(self, index: int) -> int:
         """
         Request air bubble self-test for a given detector (ADA or ADV)
         Constraints:
@@ -167,7 +167,7 @@
             self.logger.debug("Timeout!!!!")
             return False
 
-    def cmd_air_bubbles_data_broadcast_interval_override(self, ms, reset=NO_RESET):
+    def cmd_air_bubbles_data_broadcast_interval_override(self, ms: int, reset: int = NO_RESET) -> int:
         """
         Constructs and sends the air bubbles data broadcast interval override command
         Constraints: