diff --git a/infra/telegraf/README.md b/infra/telegraf/README.md
index 16ee9d458..b4cb683a0 100644
--- a/infra/telegraf/README.md
+++ b/infra/telegraf/README.md
@@ -31,7 +31,7 @@ und openWB/PV ausschliesslich nach `iobroker` - keine Dopplung.
 
 | Measurement   | Tags                          | Wert        | Quelle |
 |---------------|-------------------------------|-------------|--------|
-| `temperature` | `node` (Raum/heizraum), heizraum zus. `sensor`=ROM | float Grad C | `<raum>/temp`, `heizraum/<ROM>` |
+| `temperature` | `node` + optional `sensor` | float Grad C | `<raum>/temp`, `heizraum/<ROM>`, `oelknoten/<rolle>`, `shellies/.../ext_temperature` → `garage_decke` |
 | `io_state`    | `node`=heizraum, `signal` (pumpe1-4/brenner/kessel) | int 0/1 | `heizraum/io/+`, `heizraum/state/kessel` |
 | `power`       | `node` (klima_flur_oben/unten), `geraet` | float W/Wh | Shelly `*/status/pm1:0` |
 
@@ -73,3 +73,35 @@ pct push 143 klima.conf /etc/telegraf/telegraf.d/klima.conf
 pct exec 143 -- systemctl restart telegraf
 pct push 143 klima-bewertung.json /etc/grafana/provisioning/dashboards/klima-bewertung.json
 ```
+
+## garage_decke (ab 26.06.2026)
+
+Garage-Deckentemperaturen: 5x DS18B20 an 2x Shelly 1 (Gen1) → DB `sensors`, Measurement `temperature`.
+
+| Tag | Bedeutung |
+|-----|-----------|
+| `node` | `garage_decke` (**nicht** `garage` — das ist der Raum-Satellit) |
+| `sensor` | `rl_klimadecke`, `vl_kaeltedecke`, `vl_brunnen`, `rl_brunnen`, `reserve` |
+
+MQTT-Topics (Shelly Gen1, plain float °C):
+
+| Shelly | IP | Topics |
+|--------|-----|--------|
+| shelly1-F4CFA2D3B444 | 192.168.178.86 | `shellies/shelly1-F4CFA2D3B444/ext_temperature/0..2` |
+| shelly1-8CAAB55D9A15 | 192.168.178.78 | `shellies/shelly1-8CAAB55D9A15/ext_temperature/0..1` |
+
+Konfiguration: 5 feste `[[inputs.mqtt_consumer]]` in `satellites.conf` (je Topic + feste Tags).
+
+Grafana-Dashboard: **Garage Decke** (UID `garage_decke`) → `/d/garage_decke/garage-decke`
+
+Ausführliche Doku: CT999 `/root/docs/projekte/garage-decke-monitoring.md`
+
+Shelly Gen1: MQTT aktiv → Shelly-App zeigt offline (Cloud vs. MQTT).
+
+Deploy:
+```bash
+pct push 143 satellites.conf /etc/telegraf/telegraf.d/satellites.conf
+pct exec 143 -- systemctl restart telegraf
+pct push 143 garage_decke.json /etc/grafana/provisioning/dashboards/garage_decke.json
+pct exec 143 -- systemctl restart grafana-server
+```
diff --git a/infra/telegraf/satellites.conf b/infra/telegraf/satellites.conf
index 49168237f..f132c8787 100644
--- a/infra/telegraf/satellites.conf
+++ b/infra/telegraf/satellites.conf
@@ -87,7 +87,7 @@
       online = 1
       offline = 0
 # --- Garage-Decke: 5x DS18B20 ueber 2 Shelly 1 (Gen1), MQTT ---
-# Phys. Identifikation offen (spaeter via Shelly-App zuordnen):
+# Sensor-Zuordnung final (26.06.2026, User-identifiziert):
 #   rl_klimadecke  = shelly .86 idx0 hwID 28ff641e01be641a  (RL Klimadecke)
 #   reserve        = shelly .86 idx1 hwID 28ff641e01b534e2  (Reserve)
 #   vl_kaeltedecke = shelly .86 idx2 hwID 28ff641e23c9d2f6  (VL KaelteDecke)