MODEL: WT-1201

PRODUCT: Electromagnetic Buzzer

EDITION: A/2016

RELIABILITY TEST (CONTINUED)

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test condition and requirement

drop test

Drop on a hard wood board of 4cm thick, any directions , 6 times,

at the height of 75cm .

Allowable variation of SPL after test: ±10dB

vibration test

After being applied vibration of amplitude of 1.5mm with 10 to 55 Hz

band of vibration frequency to each of 3 perpendicular directions for 2 hours .

Allowable variation of SPL after test: ±10dB.

solderability test

Lead terminals are immersed in rosin for 5 seconds and then immersed in

solder bath of +300±5ºC for 3±1 seconds .

90% min. lead terminals will be wet with solder

(Except the edge of terminals).

terminal strength

pulling test

The force of 9.8N(1.0kg) is applied to each terminal in axial direction for 10 seconds.

No visible damage and cutting off.

TEST CONDITION

Standard Test Condition: a) Temperature : +5 ~ +35ºC

b) Humidity : 45 ~ 85%

c) Pressure : 860 ~ 1060mbar

TESTING METHOD

Standard Measurement conditions : Temperature: 25±2ºC Humidity:45 ~ 65%

ACOUSTIC CHARACTERISTICS:

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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: