From 3d278b626afa7c3414a24a24cb34780dd2ac1bd0 Mon Sep 17 00:00:00 2001
From: AlCalzone <dominic.griesel@nabucasa.com>
Date: Thu, 17 Jul 2025 09:19:44 +0200
Subject: [PATCH] Z-Wave JS: Add statistics sensors for channel 3 background
 RSSI (#148899)

---
 homeassistant/components/zwave_js/sensor.py | 19 +++++++++++++++++++
 tests/components/zwave_js/test_sensor.py    | 10 ++++++++--
 2 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/homeassistant/components/zwave_js/sensor.py b/homeassistant/components/zwave_js/sensor.py
index ac65b9e2749..f62e6e1a9f2 100644
--- a/homeassistant/components/zwave_js/sensor.py
+++ b/homeassistant/components/zwave_js/sensor.py
@@ -470,6 +470,23 @@ ENTITY_DESCRIPTION_CONTROLLER_STATISTICS_LIST = [
         state_class=SensorStateClass.MEASUREMENT,
         convert=convert_nested_attr,
     ),
+    ZWaveJSStatisticsSensorEntityDescription(
+        key="background_rssi.channel_3.average",
+        translation_key="average_background_rssi",
+        translation_placeholders={"channel": "3"},
+        native_unit_of_measurement=SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
+        device_class=SensorDeviceClass.SIGNAL_STRENGTH,
+        convert=convert_nested_attr,
+    ),
+    ZWaveJSStatisticsSensorEntityDescription(
+        key="background_rssi.channel_3.current",
+        translation_key="current_background_rssi",
+        translation_placeholders={"channel": "3"},
+        native_unit_of_measurement=SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
+        device_class=SensorDeviceClass.SIGNAL_STRENGTH,
+        state_class=SensorStateClass.MEASUREMENT,
+        convert=convert_nested_attr,
+    ),
 ]
 
 CONTROLLER_STATISTICS_KEY_MAP: dict[str, str] = {
@@ -488,6 +505,8 @@ CONTROLLER_STATISTICS_KEY_MAP: dict[str, str] = {
     "background_rssi.channel_1.current": "backgroundRSSI.channel1.current",
     "background_rssi.channel_2.average": "backgroundRSSI.channel2.average",
     "background_rssi.channel_2.current": "backgroundRSSI.channel2.current",
+    "background_rssi.channel_3.average": "backgroundRSSI.channel3.average",
+    "background_rssi.channel_3.current": "backgroundRSSI.channel3.current",
 }
 
 # Node statistics descriptions
diff --git a/tests/components/zwave_js/test_sensor.py b/tests/components/zwave_js/test_sensor.py
index ef77e22bbec..a005d374b31 100644
--- a/tests/components/zwave_js/test_sensor.py
+++ b/tests/components/zwave_js/test_sensor.py
@@ -800,8 +800,10 @@ CONTROLLER_STATISTICS_SUFFIXES_UNKNOWN = {
     "average_background_rssi_channel_0": -2,
     "current_background_rssi_channel_1": -3,
     "average_background_rssi_channel_1": -4,
-    "current_background_rssi_channel_2": STATE_UNKNOWN,
-    "average_background_rssi_channel_2": STATE_UNKNOWN,
+    "current_background_rssi_channel_2": -5,
+    "average_background_rssi_channel_2": -6,
+    "current_background_rssi_channel_3": STATE_UNKNOWN,
+    "average_background_rssi_channel_3": STATE_UNKNOWN,
 }
 NODE_STATISTICS_ENTITY_PREFIX = "sensor.4_in_1_sensor_"
 # node statistics with initial state of 0
@@ -944,6 +946,10 @@ async def test_statistics_sensors_no_last_seen(
                         "current": -3,
                         "average": -4,
                     },
+                    "channel2": {
+                        "current": -5,
+                        "average": -6,
+                    },
                     "timestamp": 1681967176510,
                 },
             },