Impassa SCW9055-433 Self-Contained 2-Way Wireless Security System• Supports 64 Wireless Zone and 16 Wireless Keys(without using a zone slot)• Kit contains the following items:• 1x DSCSCW-BATTERYHC - High Capacity Battery (Included inside the Panel)• 1x TEL16VAC1500MPS/5 - 16VAC/1.5A Plug Pack Power Supply - 2 Wires (Included in the Panel Box)• Requires 1-Way and/or 2-Way Wireless Devices and LC0280 Telephone Lead with 606 Socket and 2M Telephone Cord (Sold Separately)