sensor

ThirdReality Garage Door Tilt Sensor

budget local: excellent Zigbee

Price: $17.99 verified Nov 2, 2026
HA fit: good
Offline: yes
Setup: easy
Hub needed: yes

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ThirdReality Garage Door Tilt Sensor - Cheap Zigbee tilt sensor purpose-built for garage door open/close monitoring

Quick verdict

Stick it on your garage door and you'll always know if it's open or closed. Dead simple, dirt cheap, and runs locally over Zigbee. It won't open or close the door for you. It just reports state. But that's all you need for a "garage left open" notification automation.

Standout: Cheap Zigbee tilt sensor purpose-built for garage door open/close monitoring.

Notes last checked Mar 22, 2026.

Compatibility snapshot

Home Assistant good

Apple Home none

Google Home none

Alexa none

Works offline yes

Setup easy

Extra hub needed yes

Power battery

Local control facts

Home Assistant: zha integration, Local Polling (home-assistant.io, checked Oct 10, 2026)
Zigbee2MQTT: supported device, listed as Third Reality 3RDTS01056Z (Garage door tilt sensor) (zigbee2mqtt.io, checked Oct 10, 2026)

Why it stands out

simple tilt-based detection that knows if the garage door is open or closed
easy installation with adhesive on the garage door panel
very affordable
fully local Zigbee with no cloud subscription

Reasons to hesitate

only detects open/closed state and does not control the garage door
Zigbee range to the garage can be tricky and may need a repeater nearby
requires a Zigbee coordinator

Best for

knowing whether your garage door is open or closed from within Home Assistant
automations that alert you if the garage door is left open at night

Avoid if

you want to both monitor AND control the garage door, since you'll need a separate opener controller
your garage is far from your Zigbee mesh with no repeaters in range

Privacy and local-control notes

Pure Zigbee sensor with no cloud dependency. Fully local operation through ZHA or Zigbee2MQTT.

Home Assistant support: supported · integration path: ZHA / Zigbee2MQTT.

Buying reality check

Price notes: Very budget-friendly. One of the cheapest ways to get garage door status into Home Assistant.

Verified price reads: lowest seen $12.99, latest $17.99 on Nov 2, 2026.

Nov 2, 2026$17.99amazon
Oct 31, 2026$19.99amazon
Oct 24, 2026$19.99amazon
Oct 17, 2026$19.99amazon
Oct 10, 2026$19.99amazon
Oct 8, 2026$12.99amazon
Oct 7, 2026$12.99amazon
Oct 6, 2026$12.99amazon

Compare side by side: see sensor comparisons →

What changed for this product

Oct 10, 2026 · Brief

Black Friday smart home deals for Home Assistant: the prices to beat

Black Friday 2026 smart home deals for Home Assistant and local-control homes: the lowest price I've recorded for 100+ Zigbee, Z-Wave, Matter and Wi-Fi devices.

From the change log and the news briefs that name this product.

Verified against

The compatibility notes above have not been through the source audit yet. The manufacturer's page is here; the notes were last checked Mar 22, 2026.

Spotted something wrong? Report an error on this page and I will check it against the source and fix it.

Buying guide for this category

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Articles that mention this product

Black Friday smart home deals for Home Assistant: the prices to beat

Black Friday 2026 smart home deals for Home Assistant and local-control homes: the lowest price I've recorded for 100+ Zigbee, Z-Wave, Matter and Wi-Fi devices.

Read article →