ThirdReality
Smart Color Bulb ZL2 [A21]
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The THIRDREALITY Smart Color Bulb ZL2 is an A21 Zigbee 3.0 smart color bulb with 1600 lumens, 2700K–6500K tunable white, 16 million colors, 1%–100% brightness adjustment and a built-in Zigbee repeater.
A compatible Zigbee hub is required. Remote access, voice control and automation depend on the connected hub and smart-home platform.
Product details
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Smart lighting for high ceilings and large spaces
The THIRDREALITY Smart Color Bulb ZL2 is designed to illuminate high ceilings and expansive areas. Its 1600-lumen output helps brighten dim garages and large living rooms, while its built-in Zigbee repeater strengthens your smart-home network. Switch between focused work lighting and colorful weekend party scenes using a compatible app or voice assistant, with powerful illumination and energy-efficient operation.
1. Zigbee 3.0 standard and compatible hubs
A Zigbee hub is required. The Smart Color Bulb ZL2 works with compatible Zigbee hubs and supported Echo devices with a built-in Zigbee hub. Compatible hub and platform options include:
- Echo (4th Gen)
- Echo Plus (1st Gen and 2nd Gen)
- Echo Studio
- Echo Show 8 (3rd Gen)
- Echo Show 10 (2nd Gen and 3rd Gen)
- Echo Hub
- Eero 6 and Eero Pro 6
- Home Assistant using ZHA or Zigbee2MQTT (Z2M)
- SmartThings hubs (2015 and 2018)
- Aeotec
- Homey
- Hubitat
- THIRDREALITY Hub Gen2 Plus
2. Built-in Zigbee repeater
This A21 smart bulb also acts as a Zigbee signal repeater. It strengthens and extends your Zigbee mesh network to help reduce connectivity dead spots and support stable connections between a compatible hub and other Zigbee devices. This is especially useful in large spaces such as garages and living rooms with high ceilings.
3. High efficiency, powerful output
Enjoy energy-efficient smart lighting without compromising on brightness. The Smart Color Bulb ZL2 delivers 1600 lumens while consuming less power than traditional bulbs, helping reduce energy costs. Its powerful output suits high-ceiling rooms and workshops, as well as primary lighting in kitchens and living areas where both performance and efficiency matter.
4. Vibrant color and tunable white
Choose from 16 million colors and adjust white light from 2700K to 6500K. Use bright, cool white at 6500K for focused work in a home office or garage workshop, then switch to warm, dimmed lighting for relaxation in a large living room. Adjust brightness from 1% to 100% through compatible smart controls to suit your activity or mood.
5. Smart control and automation for large spaces
Control the high-output A21 bulb remotely through a compatible hub and app, and create automation routines for your home. Integrate with Alexa or Google Home through a compatible hub to control hard-to-reach lights by voice, including lights on high ceilings or in large garages. Set schedules so your spaces automatically illuminate at dusk, supporting everyday security and convenience.
6. More smart assistants and OTA updates with Smart Bridge MZ1
The THIRDREALITY Smart Bridge MZ1, sold separately, enables integration with Apple Home, Google Home, Amazon Alexa and SmartThings. A compatible smart speaker is required for voice control. Adjust lighting settings by voice, or use an app to set schedules and create automation routines. The MZ1 setup also supports software OTA (Over-the-Air) updates for firmware upgrades.
Product specifications
| Brand | THIRDREALITY |
|---|---|
| Model | ZL2 |
| Bulb shape | A21 |
| Wireless protocol | Zigbee 3.0 |
| Light output | 1600 lumens |
| White color temperature | 2700K–6500K |
| Color options | 16 million colors |
| Brightness adjustment | 1%–100% through compatible smart controls |
| Zigbee repeater | Built in |
| Hub requirement | Compatible Zigbee hub required |
Dimensions
The bulb measures 2.66 inches wide and 4.88 inches tall.
Pack options
Choose Single Pack or 4-Pack.
Frequently asked questions
Does the Smart Color Bulb ZL2 need a hub?
Yes. A compatible Zigbee hub is required. If using an Echo device as the hub, choose a compatible model with Zigbee built in.
Does it work with Home Assistant?
Yes. The ZL2 supports Home Assistant setups using ZHA or Zigbee2MQTT (Z2M).
How does it connect to Apple Home?
Apple Home integration uses the THIRDREALITY Smart Bridge MZ1, which is sold separately. The bulb itself connects over Zigbee.
Can I adjust both white light and colors?
Yes. The bulb supports 2700K–6500K tunable white light, 16 million colors and 1%–100% brightness adjustment through compatible smart controls.
Can I control the bulb remotely or use voice commands?
Yes. Remote control, schedules and automation use a compatible hub and app. Alexa or Google Home voice control requires a compatible hub and supported smart speaker. Smart Bridge MZ1, sold separately, also enables integration with Apple Home, Google Home, Amazon Alexa and SmartThings.
Are OTA firmware updates supported?
Yes. The Smart Bridge MZ1 setup supports OTA (Over-the-Air) software updates for firmware upgrades.
Product setup and resources
Zigbee compatibility
Smart Color Bulb ZL2 [A21] is a Zigbee product and requires a compatible Zigbee hub or coordinator before it can be added to an ecosystem.
Use the product manual and firmware history below to confirm setup steps and current platform notes for this SKU.