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Deal-Breaker Comparison
| Attribute | Home Assistant Yellow | Shelly Plus 1 | SONOFF Zigbee 3.0 USB Dongle Plus |
|---|---|---|---|
| Local Control | +Local Control | +Local Control | +Local Control |
| Open API | +Open API | +Open API | +Open API |
| Cloud Dependency | No Cloud Needed | No Cloud Needed | No Cloud Needed |
Overview
Home Assistant Yellow
Home Assistant Yellow is the official purpose-built hub from Nabu Casa, the company that employs the core developers of the open-source Home Assistant project. It pairs a Raspberry Pi Compute Module 4 with a carrier board designed specifically for home automation: Gigabit Ethernet, an M.2 slot for NVMe storage, two USB-A ports, and a Silicon Labs MGM210P radio module that handles Zigbee 3.0 and is Thread-capable for Matter ecosystems. It ships with Home Assistant OS preinstalled, so it boots straight into a fully local smart home controller with no account, no subscription, and no cloud dependency.
Shelly Plus 1
The Shelly Plus 1 is a miniature Wi-Fi relay from Shelly (Allterco Robotics) that installs behind an existing wall switch or inside a junction box, making ordinary lights, fans, gates, and garage doors smart without replacing any visible hardware. At roughly 42 by 36 by 17 millimeters it fits in standard wall boxes, its dry-contact relay switches up to 16 amps, and it accepts a wide range of supply voltages — 110 to 240 volts AC as well as low-voltage DC — which makes it useful well beyond lighting.
SONOFF Zigbee 3.0 USB Dongle Plus
The SONOFF Zigbee 3.0 USB Dongle Plus, commonly known by its model name ZBDongle-P, is a USB Zigbee coordinator built around the Texas Instruments CC2652P radio chip with a +20 dBm power amplifier and an external SMA antenna. Plugged into a machine running Zigbee2MQTT or Home Assistant's ZHA integration, it becomes the brain of a fully local Zigbee network, pairing and controlling bulbs, sensors, switches, and plugs from hundreds of manufacturers without any proprietary hub, account, or cloud service involved.