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ecobee Smart Thermostat Premium

The ecobee Smart Thermostat Premium is the flagship of one of the two thermostat makers that have actually stayed the course in smart climate control. The Premium model wraps a responsive touchscreen in a zinc-and-glass housing, adds a built-in air quality sensor for VOCs and estimated CO2, includes a remote SmartSensor for occupancy and temperature in a second room, and doubles as a small smart speaker with Siri or Alexa onboard. It is a thermostat first, though, and the core job, running your HVAC reliably on a schedule, works whether or not the internet does.

Aqara Door and Window Sensor P2

The Aqara Door and Window Sensor P2 is a small Thread-based contact sensor that reports whether a door, window, drawer, or cabinet is open or closed. Unlike Aqara's older Zigbee sensors, the P2 speaks Matter over Thread natively, so it pairs directly with any Thread border router and Matter controller, an Apple TV 4K, HomePod, Home Assistant with a Thread radio, or a SmartThings hub, without ever touching an Aqara hub or the Aqara cloud. Pairing is a QR-code scan, and from that point everything runs on your local network.

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.