From 8b5d1dc737da7567b868481498366e32526a8130 Mon Sep 17 00:00:00 2001
From: Maximilian Rink <maximilian.rink@telekom.de>
Date: Sun, 5 Jul 2026 16:01:06 +0200
Subject: [PATCH] fix(bosch): skip cable sensor temperature when disabled

---
 src/lib/bosch.ts   | 12 ++++++++++
 test/bosch.test.ts | 60 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+)

diff --git a/src/lib/bosch.ts b/src/lib/bosch.ts
index f3af702e59c46..f81284fd70057 100644
--- a/src/lib/bosch.ts
+++ b/src/lib/bosch.ts
@@ -3577,6 +3577,18 @@ export const boschThermostatExtend = {
             scale: 100,
             reporting: {min: 30, max: "MAX", change: 20},
             access: "STATE_GET",
+            fzConvert: (_model, msg, _publish, _options, meta) => {
+                const cableSensorMode = meta.state.cable_sensor_mode ?? msg.endpoint.getClusterAttributeValue("hvacThermostat", "cableSensorMode");
+                if (cableSensorMode === "not_used" || cableSensorMode === 0x00) {
+                    return;
+                }
+
+                const value = msg.data.cableSensorTemperature;
+                if (typeof value !== "number") {
+                    throw new Error("cableSensorTemperature must be a number");
+                }
+                return {cable_sensor_temperature: value / 100};
+            },
         }),
     heaterType: () =>
         m.enumLookup<"hvacThermostat", BoschThermostatCluster>({
diff --git a/test/bosch.test.ts b/test/bosch.test.ts
index 470e2de25baf5..38a858c55726a 100644
--- a/test/bosch.test.ts
+++ b/test/bosch.test.ts
@@ -39,6 +39,66 @@ describe("Bosch thermostats", () => {
         expect(definition.toZigbee.some((converter) => converter.key.includes("weekly_schedule"))).toBe(false);
         expect(JSON.stringify(definition.exposes)).not.toContain("weekly_schedule");
     });
+
+    it("does not publish cable sensor temperature when cable sensor mode is disabled", () => {
+        const device = mockDevice({
+            modelID: "RBSH-RTH0-ZB-EU",
+            manufacturerName: "BOSCH",
+            endpoints: [
+                {
+                    ID: 1,
+                    inputClusters: ["hvacThermostat"],
+                },
+            ],
+        });
+        const extend = boschThermostatExtend.cableSensorTemperature();
+        const converter = extend.fromZigbee?.[0];
+
+        if (!converter?.convert) throw new Error("No fromZigbee converter for cable_sensor_temperature");
+
+        const result = converter.convert(
+            device,
+            {
+                data: {cableSensorTemperature: 2150},
+                endpoint: device.getEndpoint(1),
+            } as never,
+            () => {},
+            {},
+            {state: {cable_sensor_mode: "not_used"}} as never,
+        );
+
+        expect(result).toBeUndefined();
+    });
+
+    it("publishes cable sensor temperature when cable sensor mode is enabled", () => {
+        const device = mockDevice({
+            modelID: "RBSH-RTH0-ZB-EU",
+            manufacturerName: "BOSCH",
+            endpoints: [
+                {
+                    ID: 1,
+                    inputClusters: ["hvacThermostat"],
+                },
+            ],
+        });
+        const extend = boschThermostatExtend.cableSensorTemperature();
+        const converter = extend.fromZigbee?.[0];
+
+        if (!converter?.convert) throw new Error("No fromZigbee converter for cable_sensor_temperature");
+
+        const result = converter.convert(
+            device,
+            {
+                data: {cableSensorTemperature: 2150},
+                endpoint: device.getEndpoint(1),
+            } as never,
+            () => {},
+            {},
+            {state: {cable_sensor_mode: "cable_sensor_without_regulation"}} as never,
+        );
+
+        expect(result).toStrictEqual({cable_sensor_temperature: 21.5});
+    });
 });
 
 describe("Bosch thermostat relayState extension", () => {