SCE028SA3SR4B

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Alarms, Buzzers, and Sirens are devices that emit some sort of noise alarm or signal when triggered. They are essential for various applications, such as industrial safety, security systems, and commercial warning systems. The SCE028SA3SR4B is a piezoelectric sounder that is commonly used for alarm and siren applications. This article explains the application field and working principle of this sounder.

Application Field

The SCE028SA3SR4B is a low-voltage piezoelectric sounder that is suitable for various alarm and siren applications such as burglar alarms, fire alarms, emergency exit alarms, car alarms, and more. It is designed for use at temperatures ranging from -20 to 70°C, and is CE compliant for use in different countries. It is also designed to resist high levels of vibration, and the typical transmission range is 1500m.

The SCE028SA3SR4B is also UL 94V-0 certified, indicating its flame-resistance. It operates with a working voltage range of 12 to 24 Vdc, and has a current consumption rating of 10mA at 5 Vdc. The output sound pressure level is rated at 94db, and the sound frequency range is between 1.9KHz and 4KHz.

Working Principle

The SCE028SA3SR4B is a piezoelectric sounder which produces sound using the application of electrical current. As electricity is applied, it makes the crystal vibrate and emit mechanical pressure waves into the air. These waves travel through the air until they reach the ear of an observer, and the energy of this wave is then converted to sound. This is the process in which the SCE028SA3SR4B produces sound.

The sounder is constructed of a ceramic body, containing two opposing piezoelectric quartz crystals and two pairs of electrodes. When the electric voltage is applied to the piezoelectric quartz crystals, the piezoelectric ceramic will produce mechanical stress and then generate sound. The two oscillators of the SCE028SA3SR4B are connected in series, allowing for a greater range of frequencies and allowing the production of more complicated tones.

Conclusion

The SCE028SA3SR4B is a piezoelectric sounder that is suitable for various alarm and siren applications. It operates with a working voltage range of 12 to 24 Vdc, and has a current consumption rating of 10mA at 5 Vdc. It produces sound using the application of electrical current which causes the piezoelectric ceramic to generate mechanical stress and then emit sound waves. It is versatile and reliable, making it a great choice for alarm and siren applications.

The specific data is subject to PDF, and the above content is for reference