{"id":381951,"date":"2026-11-11T20:00:32","date_gmt":"2026-11-11T19:00:32","guid":{"rendered":"https:\/\/raspberrypi.dk\/?post_type=product&#038;p=381951"},"modified":"2026-11-11T22:44:30","modified_gmt":"2026-11-11T21:44:30","slug":"home-assistant-connect-aux-2","status":"publish","type":"product","link":"https:\/\/raspberrypi.dk\/en\/product\/home-assistant-connect-aux-2\/","title":{"rendered":"Home Assistant Connect AUX-2"},"content":{"rendered":"<ul>\n<li>\n<h2>Key messages<\/h2>\n<ul>\n<li><strong>Note:<\/strong> A Home Assistant system is required to connect and control devices with Connect AUX-2.<\/li>\n<li>\ud83e\uddf0 <strong>THE SMART HOME MULTI-TOOL<\/strong> \u2013 audio, serial, Z-Wave, and Bluetooth, all at the same time. Just plug it in, and Home Assistant\u2019s wizard helps you set it up.<\/li>\n<li>\u26a1<strong>POWERFUL OPTIONS<\/strong> \u2013 power and data over a single Power over Ethernet (PoE) cable, or use USB-C power with Wi-Fi\/Ethernet.<\/li>\n<li>\ud83c\udfb6 <strong>WHOLE-HOME SYNCED AUDIO<\/strong> \u2013 CD-quality analog or optical audio for your Hi-Fi or receiver, in sync with your smart speakers, and ready for Music Assistant.<\/li>\n<li>\ud83c\udf9b\ufe0f <strong>ADVANCED CONTROL<\/strong> \u2013 2\u00d7 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.<\/li>\n<li>\ud83d\udce1 <strong>CONNECT ANYWHERE<\/strong> \u2013 move your Z-Wave network (Connect ZWA-2) to the best spot in your home. Adapter sold separately.<\/li>\n<li>\ud83d\udcf6 <strong>ROCK-SOLID BLUETOOTH<\/strong> \u2013 a dedicated antenna brings Bluetooth smart home devices* into Home Assistant over a stable wired connection (*Bluetooth audio is not supported).<\/li>\n<li>\ud83d\udee0\ufe0f <strong>BUILT TO BE TINKERED WITH<\/strong> \u2013 Built on ESPHome and easy to take apart. Ready to go out of the box, or customize it to your needs.<\/li>\n<li>\u2705 <strong>RELIABLE TO THE CORE<\/strong> \u2013 Built by Nabu Casa, providing dedicated support and years of software updates.<\/li>\n<li>\ud83c\udfe0 <strong>FUNDING HOME ASSISTANT<\/strong> \u2013 Every purchase funds the development of Home Assistant.<\/li>\n<\/ul>\n<h2>Key features<\/h2>\n<ul>\n<li><strong>In the box:<\/strong> Connect AUX-2, Warranty and Safety Information leaflet, Home Assistant sticker. USB-C and Ethernet cables not included.<\/li>\n<li><strong>Supported features:<\/strong> Synchronized whole-home audio with Music Assistant (Sendspin), Home Assistant media playback, RS-232 serial control, RS-485 via USB adapter (sold separately), Z-Wave via Connect ZWA-2 (sold separately), Bluetooth LE proxy.<\/li>\n<li><strong>Power and network:<\/strong> Power over Ethernet (802.3af or better) or USB-C, and Ethernet or Wi-Fi.<\/li>\n<li><strong>Chips inside:<\/strong> ESP32-S3 (SoC), TI PCM5122 (audio DAC), and W5500 (Ethernet controller).<\/li>\n<\/ul>\n<h2>Specifications<\/h2>\n<table>\n<colgroup>\n<col \/>\n<col \/><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"2\">Product<\/th>\n<\/tr>\n<tr>\n<td><strong>Model No.<\/strong><\/td>\n<td>NC-AUX-9758<\/td>\n<\/tr>\n<tr>\n<td><strong>Conformity<\/strong><\/td>\n<td>CE, FCC, RCM<\/td>\n<\/tr>\n<tr>\n<td><strong>FCC-ID<\/strong><\/td>\n<td>2A8ZE06<\/td>\n<\/tr>\n<tr>\n<td><strong>Origin<\/strong><\/td>\n<td>Made in China<\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\">Product details<\/th>\n<\/tr>\n<tr>\n<td><strong>SoC<\/strong><\/td>\n<td>ESP32-S3R8<br \/>\n8 MB PSRAM, 8 MB flash<\/td>\n<\/tr>\n<tr>\n<td><strong>Audio DAC<\/strong><\/td>\n<td>TI PCM5122<br \/>\n112 dB SNR<\/td>\n<\/tr>\n<tr>\n<td><strong>Ethernet controller<\/strong><\/td>\n<td>W5500<\/td>\n<\/tr>\n<tr>\n<td><strong>Power<\/strong><\/td>\n<td>USB-C, 5 V DC, 2 A<br \/>\nPower over Ethernet (802.3af or better)<\/td>\n<\/tr>\n<tr>\n<td><strong>Typical power draw<\/strong><\/td>\n<td>Under 1 W<\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\">Audio<\/th>\n<\/tr>\n<tr>\n<td colspan=\"2\"><em>Only one audio output can be used at a time.<\/em><\/td>\n<\/tr>\n<tr>\n<td><strong>Output<\/strong><\/td>\n<td>3.5 mm analog or optical (S\/PDIF)<br \/>\nOutput only<\/td>\n<\/tr>\n<tr>\n<td><strong>Analog audio<\/strong><\/td>\n<td>16-bit \/ 48 kHz stereo<\/td>\n<\/tr>\n<tr>\n<td><strong>Digital audio<\/strong><\/td>\n<td>16-bit \/ 48 kHz stereo PCM<br \/>\nLossless<\/td>\n<\/tr>\n<tr>\n<td><strong>Codecs<\/strong><\/td>\n<td>FLAC, MP3, WAV<\/td>\n<\/tr>\n<tr>\n<td><strong>Whole-home audio<\/strong><\/td>\n<td>Synchronized via Music Assistant (Sendspin)<\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\">Serial and USB<\/th>\n<\/tr>\n<tr>\n<td><strong>Serial ports<\/strong><\/td>\n<td>2\u00d7 3.5 mm RS-232 (\u00b15 V)<br \/>\nTX\/RX switch<\/td>\n<\/tr>\n<tr>\n<td><strong>USB-A<\/strong><\/td>\n<td>Connect ZWA-2 (Z-Wave)<br \/>\nWaveshare USB-to-RS-485 adapter<br \/>\n(sold separately)<\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\">Connectivity<\/th>\n<\/tr>\n<tr>\n<td><strong>Wi-Fi<\/strong><\/td>\n<td>2.4 GHz, 802.11b\/g\/n<\/td>\n<\/tr>\n<tr>\n<td><strong>Bluetooth<\/strong><\/td>\n<td>Bluetooth 5 LE<br \/>\nProxy: up to 3 active connections<\/td>\n<\/tr>\n<tr>\n<td><strong>Ethernet<\/strong><\/td>\n<td>Power over Ethernet (802.3af or better)<br \/>\nEthernet with USB-C power<\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\">Software<\/th>\n<\/tr>\n<tr>\n<td><strong>Platform<\/strong><\/td>\n<td>Built for Home Assistant<br \/>\nBuilt on ESPHome<\/td>\n<\/tr>\n<tr>\n<td><strong>Bootloader<\/strong><\/td>\n<td>Unlocked, accepts custom firmware<\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\">Device characteristics<\/th>\n<\/tr>\n<tr>\n<td><strong>Dimensions &amp; weight<\/strong><\/td>\n<td>106 x 63 x 25 mm, 104 g<br \/>\nIn box: 110 x 72 x 28 mm, 136 g<\/td>\n<\/tr>\n<tr>\n<td><strong>Enclosure material<\/strong><\/td>\n<td>Polycarbonate plastic<br \/>\nColors: white and semi-transparent<\/td>\n<\/tr>\n<tr>\n<td><strong>Environmental operating conditions<\/strong><\/td>\n<td>Indoor use only<br \/>\n0 \u00b0C to 65 \u00b0C<br \/>\n32 \u00b0F to 149 \u00b0F<br \/>\nHumidity: non-condensing<br \/>\nKeep in dry, not excessively dusty, environment to avoid damage to the unit.<br \/>\nDo not leave the unit in direct sunlight or near any heat source, as this can cause overheating.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Home Assistant Connect AUX-2 syncs old but great audio gear with smart speakers while adding serial control, Z-Wave network optimization, and a Bluetooth proxy \u2014 powered by PoE or 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