Sper Scientific 850007 Visible Light SD Card Logger - Manual (Page 8)

- 8 -
POWER SUPPLY
This meter can be powered by six AA
(1.5 V, UM3) batteries or an optional
9 Volt DC adapter. See page 31
for
battery replacement instructions.
Plug the adaptor into the power port
labeled “DC 9V,” located on the side
of the meter.
Note
When using the adapter, the meter
will remain permanently on and the
POWER button will be disabled.