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Last updated October 2026

Third Reality Smart Button

Single, double and long press from one key, years on two AAA cells and a strong Home Assistant and SmartThings fit, with a fussier Alexa setup.

4.3
742 ratings

Color: Blue

$19.99
As an Amazon Associate I earn from qualifying purchases
Launch Year: 2022

Model: 3RSB22BZ

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Our review

Third Reality Smart Button Review: A Simple Three-Action Zigbee Button That Runs on AAA Batteries

The verdict

The Third Reality Smart Button is a one-key Zigbee button that sends three actions (press, double press and hold) to a Zigbee hub, which runs whatever scene or automation you assign. It is at its best with Home Assistant and SmartThings, where owners describe quick pairing and reliable presses, and its two AAA batteries are rated for about three years. Alexa works through Echo devices with a built-in Zigbee hub or the Third Reality skill, but that path is where most of the frustration in the reviews comes from. Apple Home and Google Home need the separate Smart Bridge MZ1.

Best for
  • Home Assistant users
  • SmartThings users
  • Scene and lamp control
  • Guests and family

Pros

  • Single, double and long press from one key
  • Two AAA batteries rated for about three years
  • Pairs easily with Home Assistant (ZHA and Zigbee2MQTT)
  • Works with SmartThings and Aeotec hubs
  • LED confirms each press
  • Mounts with tape or magnetic patches, in four colors

Cons

  • Needs a Zigbee hub to work
  • Alexa pairing can be unreliable, and Echo treats it as a motion sensor
  • Apple Home and Google Home require the Smart Bridge MZ1
  • No direct pairing to bulbs and no dimming of its own
  • Indoor use only

Who is the Third Reality Smart Button for?

It suits anyone who already runs a Zigbee hub and wants a physical control for things that have no switch: a lamp in a room without a wall switch, a garage door, a goodnight scene by the bed or a simple control for guests who do not use the app. The single key reports a press, a double press and a hold, so one button can run three different actions. It switches no load itself and needs a Zigbee hub or coordinator, such as Home Assistant with ZHA or Zigbee2MQTT, a SmartThings or Aeotec hub, Hubitat, the Third Reality hub or an Echo with a built-in Zigbee hub.

What buyers love

Home Assistant owners are the happiest group: the button pairs straight away in ZHA or Zigbee2MQTT and exposes all three press types for automations. SmartThings owners report the same quick pairing, with the caveat that the driver link printed on the paperwork may be outdated and the current Edge driver is easier to find on Third Reality's forum. Many buyers mention a solid, not hollow, build and a distinct click, and the LED confirms each press. The two AAA batteries are a recurring plus, since they are cheap and easy to replace compared with coin cells, and the rated life is about three years.

What to know before you buy

Alexa is the weak spot. The button can pair directly with Echo devices that have a built-in Zigbee hub (it switches into an Echo pairing mode and shows up as a motion sensor, so Alexa only reacts once every 30 seconds), or reach Alexa through the Third Reality hub and its skill, and several owners report buttons that go unresponsive or need re-pairing. Apple Home and Google Home are only reached through the Third Reality Smart Bridge MZ1, sold separately, which publishes the button to Matter. It does not join Wi-Fi or Tuya Smart Life apps, it has no dimming of its own, and it is rated for indoor use only. Third Reality has also released a newer Smart Button ZB2 with a rechargeable battery.

Is the Third Reality Smart Button worth it?

For a Home Assistant or SmartThings home it is an easy recommendation: three actions per button, a battery that lasts for years, a choice of colors and mounting with tape or the included magnetic patches. One owner felt it now looks dated next to newer buttons, and Alexa-only homes should expect some troubleshooting, but as a dependable scene trigger on a proper Zigbee hub it does exactly what it promises.

Frequently asked questions

Does the Third Reality Smart Button need a hub?

Yes. It is a Zigbee 3.0 device and needs a Zigbee hub or coordinator, such as Home Assistant (ZHA or Zigbee2MQTT), a SmartThings or Aeotec hub, Hubitat, the Third Reality hub or an Echo with a built-in Zigbee hub.

Does the Third Reality Smart Button work with Alexa?

Yes. It pairs directly with Echo devices that have a built-in Zigbee hub after switching it to Echo pairing mode (five presses of the reset button), where Alexa sees it as a motion sensor and can react once every 30 seconds. It can also reach Alexa through the Third Reality hub and its Alexa skill.

Does it work with Apple Home or Google Home?

Only through the Third Reality Smart Bridge MZ1, sold separately, which bridges Third Reality Zigbee devices to Matter so Apple Home and Google Home can see them.

What batteries does it use and how long do they last?

It runs on two AAA batteries, included in the box, which Third Reality rates for about three years of normal use. The LED double blinks red when the battery is low.

How many actions can one button trigger?

Three: a single press, a double press and a hold. Home Assistant also receives the release of a hold as its own event.

Is the Third Reality Smart Button waterproof?

No. Third Reality states it is designed for indoor use only.

At a glance

Summary

Everything this button supports, grouped by category.

Size & Materials
3.5 × 1 × 0.5 in 89 × 26 × 13 mmAvailable in colors
Controls
Buttons (1)Double PressLong Press
Mounting
Wall MountableMagnetic Mount
Connectivity
Zigbee (Zigbee Hub required)
Integrations
Google Home (Smart Bridge MZ1 required)AlexaApple HomeKit (Smart Bridge MZ1 required)Samsung SmartThingsHome Assistant
Features
LED IndicatorLow Battery AlertsOTAHistory Records
Company
Third Reality logo

Third Reality

4.1/ 5 avg ratingChina flagHeadquartered in China

Third Reality, often styled THIRDREALITY, makes affordable Zigbee and Matter smart home accessories such as smart switches, plugs, motion and contact sensors, and night lights. Its devices are popular with SmartThings, Hubitat and Home Assistant users looking for low-cost Zigbee gear. Third Reality focuses on simple, budget-friendly automation building blocks.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Size & Materials
Dimensions

3.5 × 1 × 0.5 in 89 × 26 × 13 mm

Weight

?

Weather Resistance

NO

Third Reality's manual states the Smart Button is designed for indoor use only.

Available in colors

YES

Blue, Red, White, Yellow

Power
Battery Type

2x AAA

Battery Life

3 years

Rechargeable Battery

NO

Battery-Free (Kinetic)

NO

Controls
Buttons

1

Rotary Dial

NO

Motion Gestures

NO

Double Press

YES

Long Press

YES

Triple Press or More

NO

The button reports single press, double press, hold and release only.

Dimming Control

NO

Mounting
Wall Mountable

YES

It sticks to a wall with the double-sided tape included in the box.

Wall Plate Included

NO

Magnetic Mount

YES

Two magnetic patches are included, so it can sit on a fridge or any metal surface and be lifted off.

Connectivity
2.4 GHz WiFi

NO

Bluetooth

NO

Z-Wave

NO

Zigbee

Zigbee Hub required

Thread Protocol

NO

Other

NO

Integrations
Google Home

Smart Bridge MZ1 required

Third Reality sells the button with its Smart Bridge MZ1, which publishes Third Reality Zigbee devices to Matter, as compatible with Google Home.

Alexa

YES

Pairs directly with Echo devices that have a built-in Zigbee hub (Echo ZigBee mode, where Alexa sees it as a motion sensor), or through the Third Reality hub and its Alexa skill.

Apple HomeKit

Smart Bridge MZ1 required

Third Reality states Apple HomeKit support through its Smart Bridge MZ1, sold separately.

Samsung SmartThings

YES

Pairs with SmartThings Hub v2 and v3 and the Aeotec Smart Home Hub with Third Reality's Edge driver.

Home Assistant

YES

Supported in ZHA and Zigbee2MQTT (3RSB22BZ), with single, double, hold and release actions and battery level.

Matter

NO

Features
Direct Device Control

NO

Third Reality states a Zigbee hub is required: the button only sends its actions to a hub.

LED Indicator

YES

Sound Feedback

NO

Low Battery Alerts

YES

The LED double blinks red on low battery, and the button reports its battery level to Zigbee hubs.

OTA

YES

Automations

YES

History Records

YES

Required to work

You need a Zigbee hub for this

View all
Why it needs a Zigbee coordinator

The Third Reality Smart Button speaks Zigbee, not Wi-Fi. On its own it cannot reach your phone, your voice assistant or any automation: it needs a Zigbee coordinator to join. These are the ones in our catalog that can run it.

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