Introduction - If you have any usage issues, please Google them yourself
To realize the convenient control of the lights between the floors, a light, there is a (closed) switch control in the upstairs and downstairs. The closing of the switch does not directly determine the lighting of the lamp, and the change of the switch state is the key to the light of the light. That is, no matter the current state of the two switches, as long as there is a switch state, the change of voice will make the lighting switch between the two states. For example, when someone wants to go upstairs, if the headlights are extinguished, the lights will be lit after downstairs and after the switch is downloaded. And when someone upstairs again, and then click the downstairs switch (after the switch to open state), the lamp will also light up.