Feature:* This mini electronic beeper support DC 12V power supply and produce continuous high-decibel alarm sound up to 90dB. * Just connect to to any power supply from DC12 Volts. Complete drive circuit incorporated for direct operation from DC power source. * Widely used in the modification, DIY electronics reminder projects or other area needs sound alarm. Specification:* Name: Active Buzzer* Type: Continous Sound* Rated Voltage: DC 12V* Max Rated Current: 20mA* Mini Sound Output: 90dB* Wire Length: 16cm* Response Frequency: 2900+/-500Hz* Operating Temperature: -20C to 60C* Material: ABS Package included:* 1 x Active Electronic Alarm Buzzer