Home Assistant Connect ZWA-2 Z-Wave

Description: The Home Assistant Connect ZWA-2 is a powerful Z-Wave adapter that operates via USB on a Home Assistant Hub and seamlessly integrates Z-Wave devices into Home Assistant. This official device was designed by the Home Assistant development team in collaboration with the Z-Wave-JS developers, offering a simple plug-and-play integration. An optimized large antenna enables excellent radio range, ensuring that even distant sensors and actuators shielded by thick walls are reliably reached. Even the weakest radio signals from Z-Wave devices are received, improving network stability and simultaneously increasing the battery life of battery-operated sensors. The ZWA-2 supports not only the classic meshed Z-Wave network but also the new Z-Wave Long Range to cover even greater distances and integrate many devices. Thanks to the modern 800 series Z-Wave chipset, the adapter is backward compatible with all previous Z-Wave generations (including Z-Wave Plus/Plus V2) and supports advanced features such as Security S2 and SmartStart. The commissioning is very user-friendly: an intuitive start wizard in Home Assistant guides step by step through the setup, and firmware updates can be conveniently applied with a mouse click. Existing Z-Wave networks can be easily migrated, allowing a switch from an old Z-Wave stick to the ZWA-2 in just a few steps. With its slim, candle-like design and a discreet status LED, this adapter blends unobtrusively into any home environment. The Home Assistant Connect ZWA-2 is the ideal solution for building a reliable, range-oriented Z-Wave smart home network.

Recommended Accessories:

Home Assistant Green

Features:

Optimized large antenna ensures maximum range and reaches distant Z-Wave devices
Receives even the weakest signals for a more stable, reliable Z-Wave network and longer sensor battery life
Supports both classic Z-Wave mesh and Z-Wave Long Range for extensive coverage
Compatible with all Z-Wave generations (800 series backward, including Z-Wave Plus and Plus V2)
Supports security standard S2, simplified integration via SmartStart, and OTA firmware updates
Plug-and-play setup in Home Assistant with intuitive installation assistant and automatic updates
Easy transition from existing Z-Wave adapters by importing the existing network
Elegant candle-like design with integrated status lighting, fits unobtrusively into the home
Dedicated 900 MHz radio (Sub-GHz) avoids interference with Wi-Fi/Bluetooth and improves wall penetration

Application Examples:

Integration of a remote mailbox sensor or garden gate into the smart home using the long-range function
Improvement of radio coverage in a house with thick walls, ensuring that even distant sensors communicate reliably
Upgrade from an existing Z-Wave USB stick to the more powerful ZWA-2 adapter to enhance range and stability
Build a large Z-Wave network with numerous devices, including Z-Wave Long Range for remote areas of a property
Secure control of door locks, lighting, and sensors thanks to S2 encryption and easy SmartStart installation

Documentation:

Nabu Casa Documentation

Technical Specifications:

Manufacturer: Nabu Casa
Manufacturer SKU: NC-ZWA-9734
Protocols: Z-Wave, Z-Wave Long Range
Chipset: Silicon Labs ZG23 (Z-Wave 800 series) + ESP32-S3 (USB-to-Serial Bridge)
Connection: USB-C (5V DC, 1A)
Z-Wave Series: 800 (backward compatible with Z-Wave Plus/V2 and older)
Frequency Range: 860–930 MHz (region-dependent; e.g., EU 868 MHz / US 908 MHz)
Antenna: Omnidirectional, gain 3.38 dBi
Range: Z-Wave Long Range up to several hundred meters (open field, depending on device)
Certifications: CE, FCC, RCM
Environment: Indoor only, 0–65 °C operating temperature, non-condensing
Dimensions (W x D x H): 125 x 125 x 315 mm
Weight: 597g