Symbol Description Symbol Description
Regulatory Product Identifier
(RPI) number
Not made with natural rubber
latex
Global Trade Item Number Direct current (DC)
Federal Communications
Commission mark
Non-ionizing electromagnetic
radiation
UL Testing Services, Inc., with
respect to electri shock, fire, and
mechanical hazards only, in
accordance with UL 60601-1.
For Use by or on the order of a
licensed medical professional
Recycle - Taiwan Recycle Lithium ion battery
2INRI9/66
Designates the battery type. 2 =
2 cells in series; I = Lithium ion;
N = Nickel; R = Cylinder; 19 =
19mm; 66 = 66mm
China RoHs
Indicator lights (LEDs)
Message
Definition
NOISE/Amber The indicator labeled ‘NOISE’ displays an amber light when the
noise level measured during the test exceeds a nominal
threshold. It also is used to indicate some error conditions and
when the outcome of test is REFER, NOISY, or NO SEAL.
TEST/Yellow The indicator labeled ‘TEST’ displays a yellow light when the
selected test is being performed. A steady yellow light
indicates that a test is in progress.
READY/Green The indicator labeled ‘READY’ displays a steady green light
indicating that no test is being administer and that the screener
is ready to be used for testing.
CHARGE/Blue The indicator labeled ‘CHARGE’ displays a steady blue light
when the battery is charging. The intensity of the blue light
indicates the progress of the battery charging.
2 Symbols and indicators Welch Allyn
®
OAE Hearing Screener
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