Acoustic Characteristics:
The oscillation frequency, current consumption and sound pressure are measured by the
measuring instruments shown below
In the measuring test, buzzer is placed as follows:
Typical Frequency Response Curve
RELIABILITY：
ITEMS
Coldness
withstanding
Hotness
withstanding
Humidity
withstanding
Durability
Drop
withstanding
Vibration
withstanding
METHOD OF TEST AND MEASUREMENTS
After 98 hours of being exposed to -30 environment,
should be returned to normal environment for 2 hours,
then re-proceed to test.
After 98 hours of being exposed to +80 environment,
should be returned to normal environment for 2 hours,
then re-proceed to test.
After 98 hours of being exposed to 40
95%RH
environment in actual operation, should be returned to
normal environment for 2 hours, then re-proceed to test.
Testing after 1,000 hours actual continuous operation.
(at standard measurement conditions)
A natural drop from 75cm high down to the ground.
Vibration of 2,000 cycles per minute, 2mm amplitude,
applied in X, Y and Z directions for 30 minutes each.
PERFORMANCE
No
abnormality
shall exist
No
abnormality
shall exist
No
abnormality
shall exist
No
abnormality
shall exist
No
abnormality
shall exist
No
abnormality
shall exist
℃
℃
℃
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