Synergy Digital Alarm System Battery, Compatible with Visonic 2XER18505M Alarm System, (Li-SOCl2, 3.6V, 4000mAh) Ultra High Capacity, Replacement for Visonic 103-304742-2 Battery - Walmart.com
Visonic KP-160N PG2 Keypad and Proximity Black | 0-102719
Visonic KP-160-PG2 PowerG Wireless Two-Way Touch-Screen Keypad and Proximity