diff --git a/REPORT-plugmeter.md b/REPORT-plugmeter.md
new file mode 100644
index 00000000..e87df819
--- /dev/null
+++ b/REPORT-plugmeter.md
@@ -0,0 +1,34 @@
+# REPORT — reading the N100's power plug from DooPlex (2026-10-13)
+
+## In plain words
+
+- **Both ways work.** The plug read 6.6–7.0 W at rest; Home Assistant showed 7 W at the same time.
+- **Use the direct (tinytuya) way for measurements.** It gives a new value every 2 seconds.
+- **Home Assistant is the backup.** Alone, it did not change for 3 minutes. It looked fast only while the direct
+  reader ran, because the direct reader makes the plug report to the cloud too.
+- Home Assistant from our catalog installed with no problems. It stays on the HP demo box.
+- **One mistake:** the plug's local key was shown once in the operator chat (a filter missed it). It is not in any
+  file or commit. Pairing the plug again in Smart Life replaces the key; the operator decides.
+
+## How to use it
+
+```
+~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --duration 600 > run.csv
+~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --once
+~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --source ha --once
+```
+
+## Details
+
+Evidence, data-point map, side-by-side table and control: `documentation/audits/plugmeter-2026-10-13/README.md`.
+Data points: 19 power W×10, 18 current mA, 20 voltage V×10, 17 `add_ele` kWh×1000 (not a lifetime total).
+10 min side by side: tuya mean 8.36 W / median 7.20 / sd 2.67, 215 rows, 56 slow reads (≤ 8 s), 0 failed;
+ha mean 8.40 / 7.20 / 2.74, 301 rows, 0 failed.
+
+Secrets scan: 10 values (device id, local key, uuid, MAC, HA token, Tuya Access ID/Secret, device id from
+credentials) against the diff and every new file — 0 hits; positive control (the key planted in a scratch file) — hit.
+
+Gates: `python3 scripts/repo_gates.py` rc 0 with the three sibling clones beside it.
+Register: 125 rows before, 125 after; 0 opened, 0 closed.
+Teardown: N100 untouched; Home Assistant on demo-hp stays (on purpose); hub untouched; DooPlex keeps the user venv
+and `~/.config/felhom-bench/`. System poster: no fact changed.
diff --git a/documentation/audits/plugmeter-2026-10-13/README.md b/documentation/audits/plugmeter-2026-10-13/README.md
new file mode 100644
index 00000000..f7028a47
--- /dev/null
+++ b/documentation/audits/plugmeter-2026-10-13/README.md
@@ -0,0 +1,68 @@
+# Reading the N100's metered plug from DooPlex — 2026-10-13
+
+Two readers for the Tuya Wi-Fi plug that powers the N100 (`demo-felhom`): tinytuya on the LAN, and Home Assistant
+installed from the Felhom catalog on demo-hp's guest 9201. Tool: `scripts/bench/plugmeter.py`
+(`scripts/bench/README.md`). No key, device id or token is in this folder; they live only in DooPlex
+`~/.config/felhom-bench/` (700/600).
+
+## Setup facts
+
+- tinytuya **1.20.0** in `~/.venvs/plugmeter` (user venv; no sudo, no system package, no service).
+- Wizard: region `eu`, run in `~/.config/felhom-bench/` with its output sent to a 600 file. It found **1 device**,
+  „Smart Wi-Fi Power Meter Socket", category `cz`.
+- `tinytuya scan`: LAN `192.168.0.115`, **protocol 3.4**. No fixed router address yet.
+- Home Assistant: deployed through the dashboard endpoint (`POST /api/stacks/home-assistant/deploy`,
+  `{"DOMAIN":"enkisfelhom.hu","SUBDOMAIN":"ha"}`) at 14:33:34Z → **202**, container healthy at 14:35:46Z
+  (image pull included). Before the first setup the public address answered **401** (the setup gate closed, as
+  designed). The operator passed the gate with the dashboard sign-in, made the owner, added the Tuya
+  integration by QR, and made a non-admin, local-access-only user `felhom-bench` with a long-lived token.
+
+## Data points (read from the device, checked against Home Assistant's Tuya reading)
+
+| DP | code | unit | scale | CSV column |
+|---|---|---|---|---|
+| 19 | `cur_power` | W | ×10 | `watts` |
+| 18 | `cur_current` | mA | ×1 | `milliamps` |
+| 20 | `cur_voltage` | V | ×10 | `volts` |
+| 17 | `add_ele` | kWh | ×1000 | `kwh_total` — energy since the plug last reported to the cloud, NOT lifetime |
+
+Check: at 14:44–14:45Z tinytuya read 6.6–7.0 W, 59–60 mA, 229.9 V; Home Assistant (Tuya cloud — the same
+source the Smart Life app shows) read „7 W, 0.06 A, 230 V" on the operator's screen and 6.6 W through the API.
+Match within 0.5 W. Home Assistant's entities: `sensor.smart_wi_fi_power_meter_socket_{power,current,voltage,total_energy}`.
+
+A refresh is required: plain `status()` repeated one cached reading (3 identical rows at 2 s); `updatedps([18,19,20])`
+then `status()` gives a new value each time — the plug's previous measurement, so a row lags about one interval.
+
+## Side by side — 10 minutes, N100 at rest, `--interval 2` (14:45:17–14:55:17Z)
+
+| | rows | mean W | median W | spread (sd) | min–max W | read gap median / max | gaps > 3 s | failed reads |
+|---|---|---|---|---|---|---|---|---|
+| tuya (LAN) | 215 | 8.36 | 7.20 | 2.67 | 6.1–19.1 | 2.0 s / 8.0 s | 56 | 0 |
+| ha (cloud) | 301 | 8.40 | 7.20 | 2.74 | 6.1–19.1 | 2.0 s / 2.1 s | 0 | 0 |
+
+`side-by-side-tuya.csv`, `side-by-side-ha.csv`. The two agree almost exactly — **but not independently**:
+
+**Control (`ha-alone-3min.csv`, 14:55:44–14:58:44Z):** with the tuya reader stopped, Home Assistant's power value
+**did not change once in 3 minutes** (6.5 W throughout). When the tuya reader ran again for 20 s, Home Assistant
+moved to the last value it pushed (7.9 W) and stayed there. So the plug reports to the cloud only when asked; Home
+Assistant's 2-second freshness in the side-by-side was the tuya reader's doing. Earlier, at 14:44:48Z, Home
+Assistant still showed 18.7 W from 14:44:21Z while the plug read 6.7 W.
+
+**Recommendation: `--source tuya` for every measurement; `--source ha` as the backup and for history.**
+Each tuya gap > 3 s is a slow read (up to 8 s), not a lost one.
+
+## Home Assistant from our catalog — product notes
+
+- Install, gate and first setup worked with no defect found. Deploy-to-healthy ~2 min 12 s.
+- A non-admin Home Assistant user **can still switch the plug** (`switch.smart_wi_fi_power_meter_socket_socket_1`
+  is visible to it). Home Assistant has no read-only role. So the `felhom-bench` token can power off the N100;
+  plugmeter only reads states. Home Assistant's design, not ours — no register row.
+- A household reading a Tuya meter plug only through Home Assistant's cloud integration gets a value that can sit
+  still for minutes. Tuya's behaviour, not ours — no register row.
+- The `felhom-bench` user is local-access-only, so the public (Cloudflare) path is refused for it; plugmeter
+  connects to the guest's LAN address `192.168.0.155` and checks the certificate by name.
+
+## Teardown
+
+Machine: nothing provisioned on the N100. Host: none. Guest 9201: **Home Assistant stays installed on purpose**
+(the plug's second reader, `operations/nodes.md`). Hub: nothing. DooPlex: the user venv and `~/.config/felhom-bench/` stay.
diff --git a/documentation/audits/plugmeter-2026-10-13/ha-alone-3min.csv b/documentation/audits/plugmeter-2026-10-13/ha-alone-3min.csv
new file mode 100644
index 00000000..0dfc40c7
--- /dev/null
+++ b/documentation/audits/plugmeter-2026-10-13/ha-alone-3min.csv
@@ -0,0 +1,92 @@
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diff --git a/documentation/audits/plugmeter-2026-10-13/side-by-side-ha.csv b/documentation/audits/plugmeter-2026-10-13/side-by-side-ha.csv
new file mode 100644
index 00000000..f312aaff
--- /dev/null
+++ b/documentation/audits/plugmeter-2026-10-13/side-by-side-ha.csv
@@ -0,0 +1,302 @@
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diff --git a/documentation/audits/plugmeter-2026-10-13/side-by-side-tuya.csv b/documentation/audits/plugmeter-2026-10-13/side-by-side-tuya.csv
new file mode 100644
index 00000000..8baac98e
--- /dev/null
+++ b/documentation/audits/plugmeter-2026-10-13/side-by-side-tuya.csv
@@ -0,0 +1,216 @@
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diff --git a/documentation/operations/nodes.md b/documentation/operations/nodes.md
index a3c0a647..68a968e6 100644
--- a/documentation/operations/nodes.md
+++ b/documentation/operations/nodes.md
@@ -185,6 +185,15 @@ the hub `host_recovery` row **`demo-felhom-8363b5`** (same PUT `…/recovery-cre
 uses; verified retrievable + authenticating over `:22`). Retrieval + shred-the-copy recipe is identical
 to demo-hp's below (swap the host_id). So a lost N100 key is recoverable the same way as the key-less HP.
 
+## The N100 is on a metered plug (2026-10-13)
+
+The N100 draws its power through a Tuya Wi-Fi plug with a power meter (LAN `192.168.0.115`, protocol 3.4; re-check
+with `tinytuya scan` if it stops answering). Read it from DooPlex with
+`~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --once` (`scripts/bench/README.md`). A second reader,
+**Home Assistant on demo-hp's guest 9201** (`ha.enkisfelhom.hu`, installed from the catalog 2026-10-13), **stays
+installed on purpose**: it reads the plug through Tuya's cloud and keeps its history. Keys live only in DooPlex
+`~/.config/felhom-bench/`. `audits/plugmeter-2026-10-13/`.
+
 ## Tailscale on demo-hp is an OPERATOR-LAB EXCEPTION
 
 > **Read this before any product-shape audit.** `demo-hp` is **customer-shaped** — it is a normal
diff --git a/scripts/CHANGELOG.md b/scripts/CHANGELOG.md
index 7a79b874..35240364 100644
--- a/scripts/CHANGELOG.md
+++ b/scripts/CHANGELOG.md
@@ -1,3 +1,14 @@
+## 2026-10-13 (evening) — plugmeter: the N100's power plug, read from DooPlex
+
+- New `scripts/bench/plugmeter.py` + `scripts/bench/README.md`: reads the Tuya meter plug the N100 runs on and prints
+  CSV (`utc_time, watts, milliamps, volts, kwh_total`) every `--interval` s (default 2); `--duration`, `--once`.
+  `--source tuya` (default) talks to the plug on the LAN (tinytuya 1.20.0, protocol 3.4) and forces a re-measure on
+  each read; `--source ha` reads Home Assistant on demo-hp's guest. Keys and the token stay in DooPlex
+  `~/.config/felhom-bench/` (700/600), never in a repo. A failed read logs to stderr and the run goes on.
+- Measured (`documentation/audits/plugmeter-2026-10-13/`): 10 min side by side, both mean ~8.4 W, median 7.2 W.
+  Home Assistant alone did not change for 3 minutes — the plug reports to the cloud only when the local reader asks.
+  Recommended source: tuya.
+- `documentation/operations/nodes.md`: the N100 is on a metered plug; Home Assistant on demo-hp stays installed.
 ## 2026-10-13 (night) — estimator v3.1 tests
 
 - `test_build_sizing_web.py` (12 tests): the bar is never below the smallest named box, its parts still sum to it
diff --git a/scripts/bench/README.md b/scripts/bench/README.md
new file mode 100644
index 00000000..5698044c
--- /dev/null
+++ b/scripts/bench/README.md
@@ -0,0 +1,33 @@
+# scripts/bench — bench tools that run on DooPlex
+
+## plugmeter.py — the N100's power meter
+
+The N100 demo box (`demo-felhom`) is on a Tuya Wi-Fi plug with a power meter. `plugmeter.py` reads it and
+prints CSV (`utc_time, watts, milliamps, volts, kwh_total`) every `--interval` seconds (default 2).
+
+```
+~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --once                 # one reading
+~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --duration 600 > a.csv  # 10 minutes
+~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --source ha --once      # through Home Assistant
+```
+
+- **`--source tuya` (default) — use this for measurements.** It talks to the plug on the home LAN and
+  makes it re-measure on every read; a new value every 2 s. Each value is the plug's previous measurement
+  (it answers a refresh with what it holds), so a row lags by about one interval. About one read in four takes
+  up to 8 s instead of 2 s; the row is late, not lost.
+- **`--source ha` — the backup.** Home Assistant on demo-hp's guest (`https://ha.enkisfelhom.hu`, installed
+  from the Felhom catalog) reads the plug through Tuya's cloud. **On its own it did not change for 3 minutes**
+  (2026-10-13); it moves only when something makes the plug report — the tuya reader does. It keeps history and graphs. Its `felhom-bench` user is local-access-only, so the tool connects
+  to the guest's LAN address and still checks the certificate by name.
+
+Setup (done 2026-10-13, `documentation/audits/plugmeter-2026-10-13/`): a user venv
+(`python3 -m venv ~/.venvs/plugmeter && ~/.venvs/plugmeter/bin/pip install tinytuya`), and the files under
+`~/.config/felhom-bench/` (700; every file 600): `plug.json` (device id, local key, address, data points),
+`ha.json`, `ha.token`, and the tinytuya wizard's output. **None of them ever goes into a repo.**
+
+`kwh_total` is the plug's `add_ele` counter — energy since the plug last reported to the cloud, not a
+lifetime total. Use watts × time for energy.
+
+When the plug moves address or is paired again: re-run the tinytuya wizard in `~/.config/felhom-bench/`
+(credentials `TUYA_ID`, `TUYA_SECRET`, `TUYA_DEVICE_ID` from `~/.config/credentials`, region `eu`) and
+update `plug.json`. Its output prints the key — send it to a file, never to a terminal or a log.
diff --git a/scripts/bench/plugmeter.py b/scripts/bench/plugmeter.py
new file mode 100644
index 00000000..a45cea55
--- /dev/null
+++ b/scripts/bench/plugmeter.py
@@ -0,0 +1,150 @@
+#!/usr/bin/env python3
+"""plugmeter.py — read the N100 bench's metered Wi-Fi plug and print CSV.
+
+  ~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --once
+  ~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --duration 600 > run.csv
+  ~/.venvs/plugmeter/bin/python scripts/bench/plugmeter.py --source ha --once
+
+CSV columns: utc_time, watts, milliamps, volts, kwh_total.
+
+Sources:
+  tuya (default)  the plug directly on the LAN (tinytuya, protocol 3.4). Reads
+                  ~/.config/felhom-bench/plug.json: id, key, ip, version, dps.
+  ha              Home Assistant on demo-hp's guest (Tuya cloud integration). Reads
+                  ~/.config/felhom-bench/ha.json (url, connect_ip, entities) and
+                  ~/.config/felhom-bench/ha.token (a non-admin long-lived token).
+                  connect_ip sends the request to the guest on the LAN while TLS still
+                  checks the certificate of the url's host name: the felhom-bench user is
+                  "local access only", so the public (Cloudflare) path is refused.
+
+Data points (read from the device 2026-10-13, documentation/audits/plugmeter-2026-10-13/):
+  19 cur_power W x10, 18 cur_current mA, 20 cur_voltage V x10, 17 add_ele kWh x1000.
+kwh_total is the plug's add_ele counter: energy since the plug last reported to the Tuya
+cloud, NOT a lifetime total. It can drop back to 0. Use watts x time for energy.
+
+A failed read logs one line to stderr and the loop continues. The key and the token are
+never printed. Secrets live only in ~/.config/felhom-bench/ (700/600), never in a repo.
+"""
+import argparse, datetime, http.client, json, os, socket, ssl, sys, time
+
+CONF = os.path.expanduser('~/.config/felhom-bench')
+
+
+def log(msg):
+    print(f'{now()} plugmeter: {msg}', file=sys.stderr, flush=True)
+
+
+def now():
+    return datetime.datetime.now(datetime.timezone.utc).strftime('%Y-%m-%dT%H:%M:%S.%fZ')[:-4] + 'Z'
+
+
+class TuyaSource:
+    def __init__(self):
+        import tinytuya
+        c = json.load(open(os.path.join(CONF, 'plug.json')))
+        self.dps = c['dps']
+        self.dev = tinytuya.OutletDevice(c['id'], c['ip'], c['key'], version=float(c['version']))
+        self.dev.set_socketTimeout(5)
+        self.dev.set_socketRetryLimit(1)
+        # updatedps asks the plug to re-measure; without it status() repeats a cached reading.
+        self.refresh = [int(self.dps[k][0]) for k in ('milliamps', 'watts', 'volts')]
+        # The plug answers a refresh with the reading it already holds; the new one arrives later. So the
+        # first read of a run can be minutes old (measured 2026-10-13: 18.7 W first, 6.8 W two seconds
+        # later). Ask once now, so the first printed row is already fresh.
+        self.dev.updatedps(self.refresh)
+        time.sleep(1)
+
+    def read(self):
+        self.dev.updatedps(self.refresh)
+        s = self.dev.status()
+        if not isinstance(s, dict) or 'dps' not in s:
+            # tinytuya returns an error dict, not an exception; it never holds the key.
+            raise RuntimeError(f"tuya error {s.get('Err') if isinstance(s, dict) else ''} {s.get('Error') if isinstance(s, dict) else s}")
+        d = s['dps']
+
+        def val(name):
+            dp, div = self.dps[name]
+            return d[dp] / div if dp in d else None
+        return val('watts'), val('milliamps'), val('volts'), val('kwh_added')
+
+
+class HASource:
+    def __init__(self):
+        c = json.load(open(os.path.join(CONF, 'ha.json')))
+        self.host = c['url'].split('://', 1)[1].rstrip('/')
+        self.ip = c.get('connect_ip') or self.host
+        self.entities = c['entities']  # {"watts": "sensor.…", "milliamps": …, "volts": …, "kwh_total": …}
+        self.token = open(os.path.join(CONF, 'ha.token')).read().strip()
+        self.ctx = ssl.create_default_context()
+
+    def state(self, entity):
+        sock = socket.create_connection((self.ip, 443), timeout=5)
+        conn = http.client.HTTPSConnection(self.host, timeout=5, context=self.ctx)
+        conn.sock = self.ctx.wrap_socket(sock, server_hostname=self.host)  # SNI + cert check on the name
+        try:
+            conn.request('GET', f'/api/states/{entity}', headers={'Authorization': 'Bearer ' + self.token})
+            r = conn.getresponse()
+            body = r.read()
+            if r.status != 200:
+                raise RuntimeError(f'HA {entity}: HTTP {r.status}')
+            return json.loads(body)
+        finally:
+            conn.close()
+
+    def read(self):
+        out = []
+        for name in ('watts', 'milliamps', 'volts', 'kwh_total'):
+            ent = self.entities.get(name)
+            if not ent:
+                out.append(None)
+                continue
+            st = self.state(ent)
+            try:
+                v = float(st['state'])
+            except (TypeError, ValueError):
+                v = None
+            if v is not None and name == 'milliamps' and st.get('attributes', {}).get('unit_of_measurement') == 'A':
+                v *= 1000
+            out.append(v)
+        return tuple(out)
+
+
+def fmt(v):
+    return '' if v is None else f'{v:g}'
+
+
+def main():
+    ap = argparse.ArgumentParser(description=__doc__.split('\n')[0])
+    ap.add_argument('--source', choices=('tuya', 'ha'), default='tuya')
+    ap.add_argument('--interval', type=float, default=2.0, help='seconds between reads (default 2)')
+    ap.add_argument('--duration', type=float, default=0, help='seconds to run; 0 = until stopped')
+    ap.add_argument('--once', action='store_true', help='one read, then exit (rc 1 if it failed)')
+    a = ap.parse_args()
+
+    src = TuyaSource() if a.source == 'tuya' else HASource()
+    print('utc_time,watts,milliamps,volts,kwh_total', flush=True)
+    start = time.monotonic()
+    fails = 0
+    while True:
+        t0 = time.monotonic()
+        try:
+            w, ma, v, kwh = src.read()
+            print(f'{now()},{fmt(w)},{fmt(ma)},{fmt(v)},{fmt(kwh)}', flush=True)
+        except Exception as e:  # one bad read must not end a measurement run
+            fails += 1
+            log(f'read failed ({type(e).__name__}: {e})')
+            if a.once:
+                return 1
+        if a.once:
+            return 0
+        if a.duration and time.monotonic() - start >= a.duration:
+            log(f'done, {fails} failed reads')
+            return 0
+        time.sleep(max(0.0, a.interval - (time.monotonic() - t0)))
+
+
+if __name__ == '__main__':
+    try:
+        sys.exit(main())
+    except KeyboardInterrupt:
+        sys.exit(0)