How many users can be added? Support August 03, 2017 11:17 Follow Five alarm phone numbers can be added. These are also the authorized phone numbers to control and modify the system. Related articles How can I assign names to the zones (sensors)? How to use the silent mode for arming/disarming. I do not receive an SMS confirmation of a setting or alarm? What happens when the alarm sounds? Why don’t I receive push message on my smartphone, even when mobile internet is enabled? Comments 0 comments Please sign in to leave a comment.