Quick answer: A Zigbee gateway coordinates compatible Zigbee devices and connects them to an app or cloud service. You need one for Zigbee products unless another confirmed device, such as a compatible control panel, already provides that coordinator function. Capacity and coverage depend on the exact gateway, device mix, placement and building conditions.
The protocol named on the product page determines whether a gateway is required. A brand name alone does not answer that question because a catalogue can contain both Wi-Fi and Zigbee versions.
What the gateway does
A Zigbee network has a coordinator. In a Tuya-compatible setup, the gateway can manage Zigbee sub-devices and connect them to the mobile app and cloud. Zigbee specifications support star and mesh network topologies.
Functions such as local scenes, remote control or cross-protocol automation depend on the gateway model and its firmware. Confirm the supported features rather than assuming they are present.
When a gateway is required
A product explicitly listed as Zigbee normally needs a compatible Zigbee gateway. A Wi-Fi product normally connects through the supported Wi-Fi network instead. A panel with a built-in compatible gateway can remove the need for a separate hub, but only when its specification confirms that role.
Browse control panels and gateways, then match the gateway protocol and ecosystem to every planned Zigbee device.
Coverage and capacity are model-specific
Do not use a universal device-count or property-size rule. Gateway capacity, radio conditions, powered routing devices, interference, walls and placement all affect the result.
Place the gateway according to its manual, away from obvious radio obstructions, then test the intended device locations. For a larger property, design and test the network before ordering additional gateways.
Frequently asked questions
Do I need a Zigbee gateway for Wi-Fi devices?
Not because of Wi-Fi alone. A Wi-Fi model uses its supported Wi-Fi connection, while a Zigbee model needs a compatible Zigbee coordinator or gateway. Check the protocol on each product page.
How many devices can one gateway support?
The limit is specific to the gateway model and firmware. The reliable total can also be affected by device types, network layout, interference and building materials, so use the manufacturer specification for the selected model.
Can a Zigbee gateway connect to Alexa or Google Home?
Some compatible gateway and device combinations can be exposed to a voice assistant through their supported app. Verify the exact product listing, assistant capability, account region and current integration before purchase.
Sources
- Tuya Developer, Smart Gateway overview (accessed 21 July 2026).
- Connectivity Standards Alliance, Zigbee Specification (accessed 21 July 2026).
