SirenThe siren supported by Viva is supplied by Aeotec. It is a 105dB siren with battery backup that also works as a z-wave network repeater, extending the network for all devices, including door locks.

Installation of a siren is done by selecting Devices from the menu in the Viva app, clicking Install new... and selecting the Siren.
Once a device is installed, it can be deleted by selecting the correct siren 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 button for 20 seconds
  2. The siren will sound for 3 seconds to confirm factory reset