A logical device can be either load or non-load device.
For example, a "dummy" button is a non-load device because it can only be used to control other devices by sending control signals.
Sensors are considered "load" devices.
Remarks
Only load devices are allowed within an IoT App. Non-load buttons are managed internally by the system through end-user device group linking.
As an exception, virtual devices can be either load or non-load type because it makes sense to emulate a non-load device (such as a button) with app code and expose the virtual device to the system.
A logical device can be either load or non-load device.
For example, a "dummy" button is a non-load device because it can only be used to control other devices by sending control signals.
Sensors are considered "load" devices.
Remarks
Only load devices are allowed within an IoT App. Non-load buttons are managed internally by the system through end-user device group linking.
As an exception, virtual devices can be either load or non-load type because it makes sense to emulate a non-load device (such as a button) with app code and expose the virtual device to the system.