We are still in the process of releasing our App support for the 2 way switching setup, so the feature is not currently available on our App. We will post an update when it becomes available!
Yes, all Den Light Switches can be used in a 2-way setup. This means that two switches can control one lighting circuit. For example, in your hallway you might have one light at the top of the stairs which you wish to control from both upstairs and downstairs.
Den Dimmer switches are still in development but we intend for them to be 2-way too. However, details are subject to change until the product is launched.