Etymotic ER•200DW8 Personal Noise Dosimeter with Data Logging - Manual (Page 9)

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Operating
Instructions
Battery Insertion
On the back side of the dosimeter, locate the arrow on the
battery compartment.
· Press down and slide
the cover off.
· Insert three AAAA batteries
(supplied) positive side
down as shown.
· Replace cover.
Power Button Functions
The Power button is used to select the type of run.
This sequence cannot be changed.
· One press: Displays Status
· Two presses: Starts a Normal run
· Three presses: Starts a QuickCheck run