Chronomatic-280 (120-1588) Preparation Faxback Doc. # 3757 CONNECTING TO AC POWER Plug the clock radio's power cord into a standard AC outlet. The display flashes. INSTALLING THE BACK-UP BATTERY To keep the clock running during an AC power failure, install a 9-volt battery. We recommend Radio Shack's Enercell Extra Life battery (Cat. No. 23-583) for best performance. Notes: To prevent unnecessary drain on the back-up battery, install the battery after you plug in the AC power cord. The clocks's display does not light while operating from battery back-up power, but the clock and alarm operate for up to 8 hours. A prolonged power failure can drain the battery. If the display flashes after an AC power failure, the battery is too low to run the clock. Replace the battery and reset the clock. Replace the battery when the BATTERY SENTINEL indicator lights. Follow these steps to install the back-up battery. 1. Press the tab and lift off the battery compartment cover on the bottom of the clock/radio. 2. Snap the battery onto the battery contacts. 3. Replace the cover. TESTING THE BATTERY The BATTERY SENTINEL indicator lights automatically if battery power is low, or the battery is not installed. (br/all-12/27/94)