Review on ECOELER 3-Way Motion Sensor Light Switch, Neutral Wire Required | UL Listed & FCC Approved Indoor Activated Switch | 1 Pack by Draven Louton

Once I discovered the email address for customer support (info@ecoeler.com) the support team was very kind, responsive and helpful. But in the end, it was determined by their engineers that the motion-sensor switch does not operate in all 3-way circuits. In particular, it does not work in the 3-way circuit with load between the switches, as depicted in one of the attached drawings. It might work in a "typical" 3-way circuit with load at the end of the circuit, as depicted in the other attached drawing (as long as the sensor switch is in the position to receive line power). But that is not my circuit so I can not verify that it does or doesn't work in a "typical" 3-way circuit. But the instructions do depict a "typical" 3-way circuit, so I assume it does work.