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5. BATTERY REPLACEMENT
Low Battery Warning
The message, "Low Battery" appears whenever battery power drops below a certain level (about 2.70 V).
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 in 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 do not plan to use the unit for a long time.
•
To avoid damage to the unit from leaky batteries, replace the main batteries at least once every two years,
and the back-up battery once every three years.
•
Never mix batteries of different types.
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.
