Unitech PT-500 - Manual (Page 8)

7
When the PT-500 is switched on and the Lithium battery is
discharged, the following low backup battery warning
message will be displayed on the PT-500 LCD:
In this situation you should upload your data from the PT-
500 to a PC and have the Lithium battery replaced. Contact
your local sales or service representative for replacement of
the Lithium battery.
Note: Data may not be backed up and data loss may occur
if both the main battery and the Lithium battery are
discharged.
2.3 Using the Keypad
The Keypad of the PT-500 consists of 36 rubber keys and
one large scanner trigger button. The keypad layout is
shown in the following picture.
BACKUP BATTERY LOW!