From 9c338183926d07215323bcd8dc88e63daaaf0197 Mon Sep 17 00:00:00 2001
From: Paulus Schoutsen <balloob@gmail.com>
Date: Tue, 27 Jul 2021 23:43:24 -0700
Subject: [PATCH] Improve CO2Signal error handling (#53602)

* Improve CO2Signal error handling

* Update homeassistant/components/co2signal/sensor.py

Co-authored-by: Franck Nijhof <git@frenck.dev>

Co-authored-by: Franck Nijhof <git@frenck.dev>
---
 homeassistant/components/co2signal/sensor.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/homeassistant/components/co2signal/sensor.py b/homeassistant/components/co2signal/sensor.py
index e7ac138335b..bd8d94355fd 100644
--- a/homeassistant/components/co2signal/sensor.py
+++ b/homeassistant/components/co2signal/sensor.py
@@ -114,6 +114,13 @@ class CO2Sensor(update_coordinator.CoordinatorEntity[CO2SignalResponse], SensorE
             f"{coordinator.entry_id}_{description.unique_id or description.key}"
         )
 
+    @property
+    def available(self) -> bool:
+        """Return True if entity is available."""
+        return (
+            super().available and self._description.key in self.coordinator.data["data"]
+        )
+
     @property
     def state(self) -> StateType:
         """Return sensor state."""