Product Introduction：It is a continuous Tone. As long as it is been powered it will Beep continuously.
These buzzers are very loud which are not used indoors, them could be used outdoors, such as traffic, factory, etc.
Complete drive circuit incorporated for direct operation from DC power source.
Widely used in computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephone, timer and other electronic products as a sound device.
【Excellent Workmanship】 High quality plastic material is selected, which ensures its durability, good water resistance and high reliability.