Arm stay: This option disables all motion sensors - no motion detection will be displayed or noted in the Subscriber Portal or on the Touch Screen Controller. While in "arm stay" mode, there is a delay in place on entry and exit zones. (The user will have time to disarm the system when triggering sensors in entry and exit zones before the alarm sounds and the central monitoring station is alerted.)
Arm away: (Regardless of whether door is tripped or not): Motion is detected and noted in both the Subscriber Portal and on the Touch Screen Controller.
Arm night: The same as arm stay, minus the entry/exit delay. While in "arm night" mode, any sensor triggered in an entry or exit zone will immediately sound the alarm and contact the central monitoring station.
http://customer.comcast.com/help-and-support/home-security/arm-and-disarm-home-security/
Arm away: (Regardless of whether door is tripped or not): Motion is detected and noted in both the Subscriber Portal and on the Touch Screen Controller.
Arm night: The same as arm stay, minus the entry/exit delay. While in "arm night" mode, any sensor triggered in an entry or exit zone will immediately sound the alarm and contact the central monitoring station.
http://customer.comcast.com/help-and-support/home-security/arm-and-disarm-home-security/