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Power Supply
The photometer is designed to operate on alkaline batteries.
The photometer features a battery indicator – see 'System Mode' functions. A
minimum voltage of 3.0V is needed to operate the photometer.
In addition to the above feature, a battery-warning message will appear automatically
on the display when the battery voltage becomes low. The batteries should be
replaced as soon as possible after the warning message appears.
Replacing the Batteries
The battery compartment in the base of the instrument is secured by four screws.
To replace the batteries, remove the cover and install the batteries, observing the
correct polarity as indicated. Use 3 x 1.5V 'AA' alkaline batteries or equivalent.
To avoid corrosion damage through leakage, remove batteries from the instrument
if it is to be stored or left unused for a long period of time.
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