Home Assistant Connect AUX-2
Available on backorder. Expect more stock by November 20, 2026.
Description
The smart home multi-tool.
Integrate your existing gear into your smart home with Home Assistant Connect AUX-2, the ultimate smart home multi-tool. Stream CD-quality audio directly to your Hi-Fi or AV receiver, perfectly synced with your existing smart speakers. Manage solar setups, TVs, UPSs, and more via its USB and two serial ports. Optimize your Z-Wave network by placing it in the ideal spot in your home, and expand your Bluetooth reach with a dedicated antenna. Power over Ethernet (PoE) enables a clean, single-cable setup, with Wi-Fi and USB-C options ready whenever you need them. Best of all, every purchase funds the development of Home Assistant.
Note: A Home Assistant system is required to connect and control devices with Connect AUX-2. Connect ZWA-2, the RS-485 adapter, and USB-C and Ethernet cables are sold separately.
Home Assistant Connect AUX-2 Official Page
Key features
- The smart home multi-tool: audio, serial, Z-Wave, and Bluetooth, all at the same time. Just plug it in, and Home Assistant's wizard helps you set it up.
- Powerful options: power and data over a single Power over Ethernet (PoE) cable, or use USB-C power with Wi-Fi/Ethernet.
- Whole-home synced audio: CD-quality analog or optical audio for your Hi-Fi or receiver, in sync with your smart speakers, and ready for Music Assistant.
- Advanced control: 2x RS-232 and an RS-485* let you control your TV, receiver, or projector even in standby, plus other serial gear. *RS-485 adapter sold separately.
- Connect anywhere: move your Z-Wave network (Connect ZWA-2) to the best spot in your home. Adapter sold separately.
- Rock-solid Bluetooth: a dedicated antenna brings Bluetooth smart home devices* into Home Assistant over a stable wired connection (*Bluetooth audio is not supported).
- Built to be tinkered with: built on ESPHome and easy to take apart. Ready to go out of the box, or customize it to your needs.
- Reliable to the core: built by Nabu Casa, providing dedicated support and years of software updates.
- Funding Home Assistant: every purchase funds the development of Home Assistant.
In the box
Connect AUX-2, Warranty and Safety Information leaflet, Home Assistant sticker. USB-C and Ethernet cables not included.
Specifications
| Model No. | NC-AUX-9758 |
| Conformity | CE, FCC, RCM (FCC ID 2A8ZE06) |
| SoC | ESP32-S3R8, 8 MB PSRAM, 8 MB flash |
| Audio DAC | TI PCM5122, 112 dB SNR |
| Ethernet controller | W5500 |
| Power | USB-C 5 V DC 2 A, or Power over Ethernet (802.3af or better); typical draw under 1 W |
| Audio output | 3.5 mm analog or optical (S/PDIF), output only, one at a time; 16-bit / 48 kHz stereo; FLAC, MP3, WAV; synchronized whole-home audio via Music Assistant (Sendspin) |
| Serial ports | 2x 3.5 mm RS-232 (±5 V), TX/RX switch |
| USB-A | Connect ZWA-2 (Z-Wave) or Waveshare USB-to-RS-485 adapter (sold separately) |
| Wi-Fi | 2.4 GHz, 802.11b/g/n |
| Bluetooth | Bluetooth 5 LE; proxy up to 3 active connections |
| Software | Built for Home Assistant, built on ESPHome; unlocked bootloader accepts custom firmware |
| Dimensions and weight | 106 x 63 x 25 mm, 104 g (boxed: 110 x 72 x 28 mm, 136 g) |
| Enclosure | Polycarbonate, white and semi-transparent |
| Operating conditions | Indoor use only, 0 to 65°C (32 to 149°F), non-condensing humidity |
Attributes
Reviews
No reviews on this product yet.
The smart home multi-tool.
Integrate your existing gear into your smart home with Home Assistant Connect AUX-2, the ultimate smart home multi-tool. Stream CD-quality audio directly to your Hi-Fi or AV receiver, perfectly synced with your existing smart speakers. Manage solar setups, TVs, UPSs, and more via its USB and two serial ports. Optimize your Z-Wave network by placing it in the ideal spot in your home, and expand your Bluetooth reach with a dedicated antenna. Power over Ethernet (PoE) enables a clean, single-cable setup, with Wi-Fi and USB-C options ready whenever you need them. Best of all, every purchase funds the development of Home Assistant.
Note: A Home Assistant system is required to connect and control devices with Connect AUX-2. Connect ZWA-2, the RS-485 adapter, and USB-C and Ethernet cables are sold separately.
Home Assistant Connect AUX-2 Official Page
Key features
- The smart home multi-tool: audio, serial, Z-Wave, and Bluetooth, all at the same time. Just plug it in, and Home Assistant's wizard helps you set it up.
- Powerful options: power and data over a single Power over Ethernet (PoE) cable, or use USB-C power with Wi-Fi/Ethernet.
- Whole-home synced audio: CD-quality analog or optical audio for your Hi-Fi or receiver, in sync with your smart speakers, and ready for Music Assistant.
- Advanced control: 2x RS-232 and an RS-485* let you control your TV, receiver, or projector even in standby, plus other serial gear. *RS-485 adapter sold separately.
- Connect anywhere: move your Z-Wave network (Connect ZWA-2) to the best spot in your home. Adapter sold separately.
- Rock-solid Bluetooth: a dedicated antenna brings Bluetooth smart home devices* into Home Assistant over a stable wired connection (*Bluetooth audio is not supported).
- Built to be tinkered with: built on ESPHome and easy to take apart. Ready to go out of the box, or customize it to your needs.
- Reliable to the core: built by Nabu Casa, providing dedicated support and years of software updates.
- Funding Home Assistant: every purchase funds the development of Home Assistant.
In the box
Connect AUX-2, Warranty and Safety Information leaflet, Home Assistant sticker. USB-C and Ethernet cables not included.
Specifications
| Model No. | NC-AUX-9758 |
| Conformity | CE, FCC, RCM (FCC ID 2A8ZE06) |
| SoC | ESP32-S3R8, 8 MB PSRAM, 8 MB flash |
| Audio DAC | TI PCM5122, 112 dB SNR |
| Ethernet controller | W5500 |
| Power | USB-C 5 V DC 2 A, or Power over Ethernet (802.3af or better); typical draw under 1 W |
| Audio output | 3.5 mm analog or optical (S/PDIF), output only, one at a time; 16-bit / 48 kHz stereo; FLAC, MP3, WAV; synchronized whole-home audio via Music Assistant (Sendspin) |
| Serial ports | 2x 3.5 mm RS-232 (±5 V), TX/RX switch |
| USB-A | Connect ZWA-2 (Z-Wave) or Waveshare USB-to-RS-485 adapter (sold separately) |
| Wi-Fi | 2.4 GHz, 802.11b/g/n |
| Bluetooth | Bluetooth 5 LE; proxy up to 3 active connections |
| Software | Built for Home Assistant, built on ESPHome; unlocked bootloader accepts custom firmware |
| Dimensions and weight | 106 x 63 x 25 mm, 104 g (boxed: 110 x 72 x 28 mm, 136 g) |
| Enclosure | Polycarbonate, white and semi-transparent |
| Operating conditions | Indoor use only, 0 to 65°C (32 to 149°F), non-condensing humidity |
No reviews on this product yet.