3015B 5-24V Continue sound of the buzzer

3015B 5-24V Continues buzzer sound
product description
UNT: mm Tolerance: + 0.5mm Sonic interruption
Specifications Model Unit HYT-3015B
Voltage rating (square wave shape) V 12
Voltage Operating Voltage V 5-14
* Current Rating (Max) MA 20
* Sound output minimum 10 cm DB 80
* Frequency resonance Hz 3100 + 500 use
Temperature C -20 ~ +80
Weight 8g