ITEM NAME:DC 3.3-5V Low Level Digital Active Speaker Buzzer Module Sensor Module Board Description: - A passive buzzer that needs square signals of 2k-5k to drive, for it has no built-in oscillating source, and then makes sounds when energized - Use an 9012 audion transistor for drive - Controllable sound frequency - it can make the buzzer beep like Do, Re, Mi, Fa, Sol, La, Ti - Working voltage: 3.3 - 5V; - With fixing bolt holes for easy installation Specification: - Material: Plastic - PCB Size ( L x W ): approx. 20 x 15mm / 0.78 x 0.6 Inch - Working Voltage: 3.3 -5 V Package Included: 1 Piece Passive Buzzer Sensor Module 3 Piece Dupont Cables.A passive buzzer that needs square signals of 2k-5k to drive, for it has no built-in oscillating source, and then makes sounds when energized. 1 Piece Passive Buzzer Sensor Module. - Use an 9012 audion transistor for drive.
