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5. BATTERY REPLACEMENT
Low Battery Warning
The message, "Main Battery Getting Weak! Replace it!" appears whenever battery power drops below a certain level. Replace the main battery immediately after this message appears. Whenever the low battery warning message appears, the OFF key will be the only function that works. If you don't turn the unit off yourself, power will switch off automatically about 30 seconds after the low battery warning appears.
Replacing Batteries
� Main Batteries Two AAA size batteries (LR03 (AM-4) or R03 (UM-4)) are used for the main power supply. The unit will not operate at all if main batteries are not installed. � Back-up Battery One CR2032 lithium battery supplies power to the memory and protects its contents. Memory contents are lost when both the main batteries and the back-up battery are removed. Be sure always to leave one of the batteries or back-up battery in place to protect memory contents. If, however, you remove the main battery for any time, memory retention will depend entirely on the condition of the back-up battery. Over a long period of time with just the back-up battery in place, memory contents are likely to be damaged. If memory seems corrupted, clear it using the RESET procedure described on section 4. Important! Incorrect use of batteries can cause them to burst or leak, possibly damaging the interior of the unit. Note the following precautions: � � � � Be sure that the positive (+) and negative (�) poles of the batteries are facing in the proper direction. Never leave dead batteries in the battery compartment. Remove the batteries if you expect not to be using the unit for a long period of time. To avoid damage to the unit from leaky batteries, replace the main batteries at least every two years, and the back-up battery every five years. Batteries should be replaced no matter how much you use the unit during that time. Never mix batteries of different types.
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Warning! � Never try to recharge the batteries supplied with the unit. � Do not expose batteries to direct heat, short-circuit them, or try to take them apart. � Keep batteries out of the reach of small children. If swallowed, consult a physician immediately.
