Specifications: Item Type: Electronic Buzzer; Model: 2312; Diameter: 23Mm; Height: 12Mm; Cable Length: 100Mm; Sound Pressure Level: 85 To 95 Decibels; Rated Voltage: 12Vdc; Operating Voltage Range: 3V-24V; Max Current: 10Ma; Weight: 3G (Approx.).Composition: The Electronic Tone Buzzer Is Mainly Composed Of A Multivibrator, A Piezoelectric Buzzer Chip, An Impedance Matching Unit, A Resonator And Of A Box. A Multivibrator Is Made Of A Transistor Or An Integrated Circuit.Application: The Piezoelectric Alarm Buzzer Is An Electronic Sounder With An Integrated Structure. The Active Piezoelectric Buzzer Uses Dc Power And Is Widely Used In Computers, Printers, Copiers, Alarms, Electronic Toys, Automotive Electronics, Telephones, Timers And Other Electronic Products.Working Principle: The Matcher Of Impedance Drives The Sound Of The Piezoelectric Buzzer.Easy To Use: Can Be Controlled Easily, The Multivibrator Vibrates And Emits An Audio Signal.