If you want to grab attention this is the buzzer you need. Power it to a 12VDC source and it will start to sound continuously at 86dB.
- Operating frequency: 3.5 ± 0.5 KHz
- Operating voltage range: 3 ~ 28 V DC
- Current consumption: 5mA max. at 12 V DC
- sound pressure level: 86 db min. at 30 cm/12 V DC
- rated voltage: 12 V DC
- tone continuous
- Operating temperature: -30 ~ +85° C
- Storage temperature: -40 ~ +95° C
- Dimensions: Ø33.7 x H14.5 mm
- Weight: 7.0 g max.
- Material: ABS UL-94 1/16” high heat (black)
- Terminal wire type
- RoHS yes