This model functions as a small shelf to place the Ecobee SmartSensor using the provided table mount base. The design allows for the use of one #8 (or M4) round head screw or a 3M Command Strip.
I intended to wall-mount one of the SmartSensors in a bedroom, but lost the OEM wall mount bracket.
(Pardon the print quality in the photos below; I used draft settings to test fit, and stuck with the first prototype!)
The author marked this model as their own original creation.