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Power Supply
Battery powered operation and external power supply
operation
The VA-12 can be powered by batteries or an external power supply (AC
adapter) connected to the unit.
When both types of power sources are present, the external power supply
has priority.
AC adapter Batteries Unit powered by
Present Present AC adapter
Present Not present AC adapter
Not present Present Batteries
Batteries
Battery life
The unit uses IEC R6 (size AA) batteries.
Actual battery life will depend on environmental and usage factors and on
the battery brand. Approximate gures are given below.
Battery life (at 23°C) Alkaline batteries LR6 12 hours
Manganese batteries R6PU 3 hours
With alkaline batteries LR6, keeping the display backlight on will result in
a battery life of about 10 hours.
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