Item Tag: 4.02×2.72×0.83 Inches

Sound Output: 100dB at 12V DC 30cm, Response Frequency: 3000±500Hz, these buzzers are very loud which are not used indoors, them could be used outdoors, such as traffic, factory, etc. It a continuous Tone.

Sound Output: 100dB at 12V DC 30cm. Sound Output: 100dB at 12V DC 30cm, Response Frequency: 3000±500Hz, these buzzers are very loud which are not used indoors, them could be used outdoors, such as traffic, factory, etc.