Smarter Home Gadgets/Open data

Open data from the test home

The numbers in our guides, published as files you can reuse. Each dataset is generated from the same source the site's diagrams are drawn from, so a figure on a page and a figure in a file cannot disagree.

Smart home device comparison

Latency from press to action over one hundred triggers, battery life over thirty days, offline behaviour, subscription and standby draw for six devices.

6 rowsCC BY 4.02026-10-07

CSV JSON

Columnsdevicelatency_msbatteryworks_offlinesubscriptionstandby_wscore_out_of_10

device	latency_ms	battery	works_offline	subscription	standby_w	score_out_of_10
Nimbus Core hub	22	mains	yes	none	3.1	9.3
Vapor Leak sensor	310	34 months	yes	none	0.0	9.4
Aurora V2 thermostat	38	mains	yes	none	1.4	9.1

Standby power of smart home devices

Idle draw measured over 24 hours with no automations firing, with the derived kWh and cost per year.

8 rowsCC BY 4.02026-10-07Our guide: What your smart home costs while doing nothing

CSV JSON

Columnsdeviceidle_wkwh_per_yearusd_per_year_at_0_14

device	idle_w	kwh_per_year	usd_per_year_at_0_14
Wi-Fi camera	4.8	42.0	5.89
Smart hub	3.1	27.2	3.8
Voice speaker	2.9	25.4	3.56

Where the energy savings came from

The 412 kWh saved in a year in the test home, split by source: off-peak shifting, heating setback, lights off, standby killing.

4 rowsCC BY 4.02026-10-07Our guide: What your smart home costs while doing nothing

CSV JSON

Columnssourcekwh_per_yearhow

source	kwh_per_year	how
Off-peak load shifting	206	Water heater and dishwasher on the low tariff
Heating setback when away	118	Motion and presence, −3 °C after 20 min
Lights off in empty rooms	51	Motion sensors on plugs, not bulbs

What works offline, by device

Eight devices during a 72-hour internet outage, against the three things “works offline” can mean.

8 rowsCC BY 4.02026-10-07Our guide: What still works when the internet goes down

CSV JSON

Columnsdevicelocal_controlautomationsapp_on_lan

device	local_control	automations	app_on_lan
Zigbee sensors	works	works	works
Thread lock	works	works	works
Local hub	works	works	works

Causes of the Thread border router error

What actually caused nineteen failed Matter-over-Thread pairings that reported a missing border router.

3 rowsCC BY 4.02026-10-07Our guide: "Your device requires a Thread border router": the real fix

CSV JSON

Columnscausefailures

cause	failures
No border router present	2
IPv6 or VLAN configuration	14
Thread credentials missing from the phone	3

Zigbee and Wi-Fi channel overlap

Each 2.4 GHz Zigbee channel, its centre frequency and whether it falls inside Wi-Fi channels 1, 6 or 11.

16 rowsCC BY 4.02026-10-07Our guide: Zigbee and Wi-Fi on 2.4 GHz: pick the channel that stops the drops

CSV JSON

Columnszigbee_channelcentre_mhzoverlaps_wifi_channelsverdict

zigbee_channel	centre_mhz	overlaps_wifi_channels	verdict
11	2405	1	overlaps
12	2410	1	overlaps
13	2415	1	overlaps

Open-source smart home projects

Licence, latest release, last commit, stars and archive status of the projects in our directory, read from the GitHub API.

17 rowsCC BY 4.02026-10-08

CSV JSON

Columnsprojectrepositorylicencelatest_releaserelease_datelast_commitgithub_starsarchived

project	repository	licence	latest_release	release_date	last_commit	github_stars	archived
home-assistant	https://github.com/home-assistant/core	Apache-2.0	2026.10.0	2026-10-07	2026-10-08	91313	False
openhab	https://github.com/openhab/openhab-core	EPL-2.0			2026-10-08	1147	False
node-red	https://github.com/node-red/node-red	Apache-2.0	5.0.8	2026-10-08	2026-10-08	23725	False

Licence and citation

All datasets are published under the Creative Commons Attribution 4.0 licence (CC BY 4.0). Reuse them for anything, including commercially, and credit “Smarter Home Gadgets” with a link to this page.

What these numbers are

Measurements from one test home, not a laboratory panel. They are useful for orders of magnitude and comparisons between device types; they are not a guarantee for a specific model in your home.