Alarm buttonThe alarm button supported by Viva is supplied by Aeotec. It is a battery-operated button used to manually arm and disarm the system.
For the Aeotec alarm button, a long press will disarm the alarm, while a short press will arm it
If the system has the Alarm Receiving Centre (ARC) enabled, the button cannot be used to disable the alarm since it reqires a password. Enabling the alarm is still possible.
After ARC deactivation, there could be a delay of 15 min before the alarm button can be used again as normal. 
Installation of a alarm button is done by selecting Devices from the menu in the Viva app, clicking Install new... and selecting the Alarm button.
Once a device is installed, it can be deleted by selecting the correct alarm 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. Insert the included button pin (or a paper clip bent to fit both holes), into both both the "learn" and "Include/exclude" holes, then press and hold for 10 seconds.
  2. If successful, the green and red LED on the front of your Panic Button will blink in an alternate pattern followed by the green LED illuminating for 2 seconds.
  3. If unsuccessful, the red LED will illuminate for 2 seconds. If this occurs, repeat the process again.