IEI-734L Piezoelectric Glassbreak Detector

Description

IEI-734L Piezoelectric Glassbreak Detector
Includes:
X1- IEI-734L Piezoelectric Glassbreak Detector (Wiring Diagram not included)
X1- Adhesive Application Kit with Instructions
Note:
Please do any necessary research and understanding on this Piezoelectric Glassbreak Detector as needed. Check the description and photos to be confident before making your purchase. These alarms sensors are in New/Unused condition from a storage supply container and are being sold as Is.
General Information that may be useful and of interest:
What is a Piezoelectric glass break alarm device?
The glass break alarm device uses the vibration-sensitive characteristics of piezoelectric elements to sense the vibration waves generated when glass is impacted and broken. The sensor converts the vibration wave into a voltage output, and the output voltage is processed by amplifying, filtering, and comparing, then providing it to the alarm system. The minimum output voltage of the sensor is 100 mV, the maximum output voltage is 100 V, and the internal impedance is 15-20 kq. When the glass is broken, it will emit vibrations of several kilohertz to tens of kilohertz. When in use, paste the polymer piezoelectric film sensor on the glass, feel the vibration, and then connect it to the alarm circuit through a cable to transmit the piezoelectric signal to the central alarm system. In order to improve the sensitivity of the alarm, after the signal is amplified, it is filtered by a bandpass filter. It is required that the attenuation of the selected spectrum passband should be small, and the attenuation outside the band should be as large as possible. The wavelength of glass vibration is in the audio and ultrasonic range, which makes the filter the key to the circuit. Only when the sensor output signal is higher than the set threshold, will it output an alarm signal to drive the alarm actuator to work. The glass break alarm can be widely used in cultural relic storage, valuable commodity storage, and other commodity counter storage.