Great news! This hub and accessory
combination is directly compatible
You can see the instructions for this connection using this instruction link
The Amazon Echo Show 10 (3rd Gen) can connect directly to the ecobee4 Smart Thermostat with Built-In Alexa. This is done using the shared Wi-Fi connection between the two devices.
Interface Compatibility
 Amazon Echo Show 10 (3rd Gen) |
 ecobee4 Smart Thermostat with Built-In Alexa |
|
|---|---|---|
| Amazon Alexa | Yes | Yes |
| Apple HomeKit | No | Yes |
| Google Assistant | No | Yes |
Connection Compatibility
|
Amazon Echo Show 10 (3rd Gen) |
ecobee4 Smart Thermostat with Built-In Alexa |
|
|---|---|---|
| Amazon Sidewalk | Yes | No |
| Bluetooth | Yes | No |
| Clear Connect | No | No |
| Thread | No | No |
| Wi-Fi | Yes | Yes |
| Z-Wave | No | No |
| Zigbee | Yes | No |