Wire Siren Electrical Piezo Alarm Buzzer 12V For Medical Equipment

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Wire Siren Electrical Piezo Alarm Buzzer 12V For Medical Equipment
Quick Detail:

  1. Size: D30mm*H25mm
  2. SPL: Min.95dB at 3.5KHz/12VDC 1/2 Duty Square Wave/30cm
  3. Operating Voltage: 5-18VDC
  4. Resonant Frequency: 3500+/-500Hz Continuous


  1. buzzer
  2. Piezo Buzzer with build-in oscillating
  3. Piezo Buzzer with Wire
  4. 12V Buzzer
  5. 30mm Piezo Buzzer

1. Technical Parameter
Measuring condition
Part shall be measured under a condition (Temperature: 535, Humidity: 45%85%R.H., Atmospheric pressure: 860 1060hPa) unless the standard condition (Temperature: 25±3, Humidity: 60±10%R.H. Atmospheric pressure: 860 1060hPa) is regulated to measure.


Rated Voltage



Operating Voltage

5– 18 VDC


Rated Current

Max.15mA, at 12VDC


Sound Output at 30cm

Min.95dB, at 12VDC


Resonant Frequency

3500±500 Hz





Operating Temperature

-20 - +70


Storage Temperature

-30 - +80






Approx 12.0g

2. Dimensions   Unit: mm           Tolerance: ±0.5mm Except Specified

*Housing Material: Black  PPO   *Lead wire: UL1007 26#

3. Reliability Test
After any following tests the part shall meet specifications without any degradation in
appearance and performance except SPL. SPL shall not deviate more than -10 dB
from the initial value
(1)Ordinary Temperature Life Test
The part shall be subjected to 96 hours at 25±10. Input rated voltage
Resonant frequency, 1/2 duty Square wave.
(2)High Temperature Test
The part shall be capable of with standing a storage temperature of +80 for 96 hours.
(3)Low Temperature Test
The part shall be capable of with standing a storage temperature of ­-30 for 96 hours.
(4)Humidity Test

Temperature:+40±3   Relative Humidity:90%95% Duration: 48 hours
and expose to room temperature for 6 hours
(5)Temperature Shock Test
Temperature:70 /1hour→ 25/3hours→-30/1hour→ 25/3hours (1cycle)
Total cycle: 10 cycles
(6)Drop Test
Standard Packaging From 75mm(Drop on hard wood or board of 5cm thick,
three sides, six plain.)
(7)Vibration Test
Vibration:1000cycles /min. Amplitude:1.5mm, Duration: 1 hour in each 3 axes
As this product is not protected from foreign material entering, please make sure that any foreign materials (e.g. magnetic powder, washing solvent, flux, corrosive gas) do not enter this product in your production processes. The functional degradation (e.g. SPL down) may occur if foreign material enter it
4.Electrical And Acoustical Measuring Condition
Recommended Setting
Recommended Test Circuit


CHANGZHOU FHD ELECTRONICS CO., LTD is a professional manufacturer in the field of ceramic components ,our products is widely used in household electrical appliances; mobile phones; computers; medical equipment; alarm system; pos machine access control system; toy; automobile; instrument and meter; electrical equipment; we can produce all kinds of piezo buzzers as long as you have the following details; welcome to consultation discussion.


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Mr. Johnson Jiang
Tel: 86-519-83822009
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Contact Method
Heping Industrial Park ,DongQing Town, Changzhou, Jiangsu, China (Mainland)
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