Sell Passive Buzzer / Bass Edge Trigger Buzzer Control Board / Sound Module / Alarm for best price

Product Description No oscillation source,need square wave(frequency 2K-5K ) to drive Audino 9012 drive; Work Voltage:3.3-5V Set bolt hole, easy to assemble PCB Dimension:3.3cm*1.3cm Pin Definition : Pin definition Vcc : 3.3-5v GND : The Ground I/O : I/O Interface of SCM Passive buzzer is characterized by: 1 passive without shock source, so if the DC signal can not make it tweet. It must be driven by a square wave of 2K~5K 2 voice frequency controllable, can make "to send Tracy cable" effect. 3 in some special cases, you can reuse a control port with LED Active buzzer is characterized by: 1 active buzzer with shock source, so as long as a power will be called 2 easy to program control, a high and low level of the microcontroller can make it sound, but not a passive buzzer. Each weight is about 6g Module description The 1 module is driven by the 9012 transistor 2 operating voltage 3.3V-5V 6 with fixed bolt hole for easy installation 7 small size: 3.3cm * 1.3cm PCB Two module interface specification (3 wire) 1 VCC external 3.3V-5V voltage (can be directly connected with the 5V microcontroller and 3.3V microcontroller) 2 GND external GND 3 I/O MCU IO port