PRO-2009 (200-0109) Preparation Faxback Doc. # 16755 Loosen the screw and remove the battery compartment cover; then snap in a 9-volt battery. (We recommend a Radio Shack long-life alkaline battery, 23-553 or equivalent.) The PRO-2009 contains an electronic memory to preserve the 8 programmed scanner channels. The battery protects this memory during AC Power failure, or when you have the set unplugged. NOTE: To avoid loss of programmed memory, do not unplug AC power cable when replacing battery. Replace battery at least every six months. CAUTION: Never leave a weak or dead battery in the PRO-2009; even "leakproof" types can leak damaging chemicals. Battery life is about two months when AC power cable is off for a prolonged period. Now you only need to do three things to be able to tune in on those exciting "monitor" frequencies; 1. Connect to a source of power - 120 volts 60 Hz AC. 2. Connect the telescopic antenna provided (or an outdoor antenna to the antenna jack in the rear of the unit.) 3. Program one or more frequencies into the Scanner channel(s). (LB/all-08/29/95)