Dual wall buttonThe dual wall button supported by Viva is supplied by NodOn. It allows for on/off control for 2 devices or groups or devices, or control of up to 4 different presets.

Installation of a dual wall button is done by selecting Devices from the menu in the Viva app, clicking Install new... and selecting the Dual wall button.
Once a device is installed, it can be deleted by selecting the correct dual wall button from the list under Devices, selecting Delete and following the instructions. 
If a devices is unresponsive, or the gateway is no longer available, the device can be factory reset using the following process:
  1. Press and hold the bottom 2 buttons for 1 second
  2. Release buttons. The devices is now factory reset