DBPOWER Ja-10bgsm 101 Zones Wireless GSM Home Security Alarm Burglar System for Fire, Gas Leak, Door Lock, Living Room, Window, Balcony,and Perimeter Burglar with Auto Dial With dual network of GSM + telephone cable, the System is more secure and reliable. Includes 2 wired zones and 102 wireless zones. The main device can dial alarm calls to 6 preset phone numbers. With the One-Key-Control function, you can conduct Away Arming, Home Arming, Remote Control Arming or Off-site Telephone Arming. Supports an external intercom speaker.