Main-Iot Alarm Service works only with Main-Iot Leak Guard. User can add up to three phone numbers where to receive alarms per one Leak Guard. When Leak Guard send an alert, Alarm service send txt message to all registered phone numbers. If there is no answer from any number within one minute, Alarm Service makes an automated phone call to all registered numbers. Alarm Service keeps calling until someone answers or total 5 times in every one minute.