ITEM NAME:1* DC 3-24V Active Electronic Buzzer Alarm Sounder Continuous Beep Speaker Best Descriptio n Description: 100% brand new and high quality. This mini electronic beeper support DC3-24V power supply and produce continuous high-decibel alarm sound. Just connect to to any power supply from DC3-24 Volts. Complete drive circuit incorporated for direct operation from DC power source. Widely used in the car modification, DIY electronics reminder projects or other area needs sound alarm. Specifications: Rated Voltage: DC 12V Resonance Frequency: 2700 Working Voltage: DC 3-24V Operating Temperature: -20 + 80 Package Included: 1 *Â Active Electronic Alarm Buzzer Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. High quality buy, happy buyï ¼ 1* DC 3-24V Active Electronic Buzzer Alarm Sounder Continuous Beep Speaker Best.Widely used in the car modification, DIY electronics reminder projects or other area needs sound alarm. Complete drive circuit incorporated for direct operation from DC power source. We want to make sure you are happy with our item.