diff --git a/envertech_local/protocol.py b/envertech_local/protocol.py
index b18ad3e..9fc7b65 100644
--- a/envertech_local/protocol.py
+++ b/envertech_local/protocol.py
@@ -39,7 +39,7 @@ async def receive_data(self, timeout=5):
         except asyncio.TimeoutError:
             return None
 
-    def parse_data(self, raw: list[int]) -> tuple[dict, int | None]:
+    def parse_data(self, raw: list[int]) -> tuple[dict, int | None, int]:
         if not raw or len(raw) < 22:
             return {}, None