Interlogix Simon XT does not indicate entry delay for Image Sensor
If the Image Sensor is enrolled in group 20 (motion with delay), the Image Sensor has an entry delay but the Interlogix Simon XT panel or 2WTTS do not indicate it with beeps or flashes because the Alarm.com module is keeping track of the entry delay. It is best to use a different sensor group than group 20 since customers rely on the panel beeps during entry delay to know when to disarm the system.
Alarm.com does not recommend using group 20. Only use groups 15, 17, or 25 for Image Sensors. For more information about sensor groups, see Interlogix Simon XT - Sensor Groups.