... time-setting, convenient for users and alarm center to control the system. 7. Can set 5 phone numbers, which used to receive alarm ... to inform users if power failure. 9. Intercom function: Can communicate with the scene people, two-way intercom. 10. Listen-in function ... Home Arm, disarm or panic alarm, convenient and practical. 12. Can control the system by calling-in, such as arm, disarm, listening-in ...