Amazon Echo Show 21 vs Shelly Wall Display

Amazon Echo Show 21 wins on sheer capability: giant Full HD screen, Alexa voice, camera, Fire TV and full Zigbee, Thread and Matter radios. Shelly Wall Display counters with a lower price, higher owner rating, 3-year warranty, climate sensors and native Home Assistant dashboards.

Cloud maximalism versus local minimalism. The Show 21 is a wall TV, family organizer and Alexa hub tied to Amazon's cloud. The Shelly is a compact, voice-less in-wall panel that renders Home Assistant dashboards locally and can switch heating through its built-in relay.

The Shelly Wall Display, without question: native on-panel dashboards, instant local automations and clean entity support. The Amazon Echo Show 21 offers only partial Home Assistant support inside an Alexa-first experience.

The Shelly Wall Display ships with a 3-year warranty versus 1 year on the Amazon Echo Show 21, and earns the higher owner rating. Each has quirks: some Shelly units drop network connections, while Show 21 owners cite buggy Alexa+ software and update regressions.

Choose Amazon Echo Show 21 for a mainstream Alexa home wanting the biggest all-in-one wall screen: streaming, widgets, video calls, camera feeds and native smart home radios.

Choose Shelly Wall Display if you run Home Assistant and want a premium, locally controlled in-wall panel with climate sensors and relay-based thermostat duty, free of clouds, cameras and voice assistants.