Central 2000 Monitored Motion Detector Security System (409-0351) Battery Faxback Doc. # 33270 INSTALLING A BACKUP BATTERY If AC power is disconnected or fails, your system operates for up to 24 hours from a 9-volt alkaline battery (Radio Shack Cat. No. 23-553, not supplied). WARNING: To prevent a possible electric shock, always disconnect the system from the phone line before you install or replace the battery. Follow these steps to install the battery. 1. Lift off the battery compartment cover. 2. Clip a 9-volt alkaline battery onto the battery contacts, then place the battery into the compartment. 3. Replace the cover. When the battery becomes low, the POWER indicator blinks. Replace the battery immediately. (BR/EB 6/5/96)