Wall Switch Position After Installing a Smart Device
Overview
When a smart device is installed behind a wall switch, the physical position of the switch may no longer show the real ON/OFF state of the connected appliance. Before the smart device was installed, the wall switch position usually showed the state of the appliance.
For example:
Switch button up = appliance OFF
Switch button down = appliance ON
After installing the smart device, this may change.
The appliance can now be controlled in more than one way:
From the wall switch
From the mobile app
From automations
From schedules
From voice assistants, if used
Because of this, the physical position of the wall switch may not always match the real state of the appliance.
Why the switch position may look reversed
The smart device controls the connected appliance electronically. This means that the device checks the actual output state, not only the physical position of the wall switch.
For example:
The wall switch is in the upper position.
The appliance is OFF.
The appliance is then turned ON from the app.
The wall switch stays in the same physical position.
Now the upper position no longer means OFF.
Because the app can change the output without moving the wall switch, the switch position may look reversed or out of sync.
This is normal behavior.
Why the device works this way
The smart device is designed to follow the real ON/OFF state of the connected output. This is important because the output can be controlled from different places. If the device only followed the physical wall switch position, the app and the wall switch could show different states. In some cases, the user would need to flip the switch twice before the appliance changes state. To avoid this, the device can work by detecting a change of the switch position instead of using only the fixed switch position.
Example
The light is OFF and the wall switch is in the upper position. You turn the light ON from the app. The wall switch is still in the upper position, but the light is now ON. When you later use the wall switch, the device detects that the switch position changed and changes the light state. This allows both the app and the wall switch to control the same output.
When to use fixed switch position
Some users prefer the wall switch position to always define the output state.
For example:
Switch closed = output ON
Switch open = output OFF
This behavior can be configured by changing the switch type parameters.
Parameter settings
To make the device operate according to the fixed state of the wall switch, set the switch type parameter to 1. Use the parameter that matches the connected switch input.
| Parameter | Input | Function |
|---|---|---|
| Parameter 1 | SW1 | Switch type for input SW1 |
| Parameter 2 | SW2 | Switch type for input SW2 |
| Parameter 3 | SW3 | Switch type for input SW3 |
| Parameter 4 | SW4 | Switch type for input SW4 |
Set the needed parameter to:
| Value | Description |
|---|---|
| 1 | Toggle switch. Contact closed means ON, contact opened means OFF |
Important note
Only change the parameter for the input that is used.
For example:
If the wall switch is connected to SW1, change Parameter 1.
If the wall switch is connected to SW2, change Parameter 2.
If the wall switch is connected to SW3, change Parameter 3.
If the wall switch is connected to SW4, change Parameter 4.
Summary
After installing a smart device, the physical position of the wall switch may not always match the real ON/OFF state. This happens because the device can also be controlled from the app, automations, schedules, or other systems. If you want the output to follow the fixed position of the wall switch, set the related switch type parameter to 1.