From bb7f64596cd361a24193dd3df90fc1d05e2aaf9c Mon Sep 17 00:00:00 2001
From: Simone Chemelli <simone.chemelli@gmail.com>
Date: Wed, 31 Mar 2021 18:46:39 +0200
Subject: [PATCH] Add operation sensor to Shelly Gas (#48462)

---
 homeassistant/components/shelly/sensor.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/homeassistant/components/shelly/sensor.py b/homeassistant/components/shelly/sensor.py
index 9e24034bf83..b6d3bc2dbff 100644
--- a/homeassistant/components/shelly/sensor.py
+++ b/homeassistant/components/shelly/sensor.py
@@ -128,10 +128,7 @@ SENSORS = {
     ("sensor", "concentration"): BlockAttributeDescription(
         name="Gas Concentration",
         unit=CONCENTRATION_PARTS_PER_MILLION,
-        value=lambda value: value,
         icon="mdi:gauge",
-        # "sensorOp" is "normal" when the Shelly Gas is working properly and taking measurements.
-        available=lambda block: block.sensorOp == "normal",
     ),
     ("sensor", "extTemp"): BlockAttributeDescription(
         name="Temperature",
@@ -170,6 +167,12 @@ SENSORS = {
         value=lambda value: round(value, 1),
         device_class=sensor.DEVICE_CLASS_VOLTAGE,
     ),
+    ("sensor", "sensorOp"): BlockAttributeDescription(
+        name="Operation",
+        icon="mdi:cog-transfer",
+        value=lambda value: value,
+        extra_state_attributes=lambda block: {"self_test": block.selfTest},
+    ),
 }
 
 REST_SENSORS = {