Active Buzzer

描述

OVERVIEW This module is extremely simple to use, and is an awesome little buzzer. See the You Tube video  to get an idea of how loud this  buzzer is. Simply send it HIGH value on the middle pin to "Buzz" or LOW value to stop it "buzzing" You can change the pitch of the buzzer by changing the frequency of the HIGH value. SPECIFICATION 3.3 to 5V Active Buzzer Alarm Module 3 Pin TTL Cable  Transistor drive module uses 8550  Operating voltage 3.3V-5V  Drive frequency: 2K ~ 5K square wave  Bolt hole mounting 2.6mm aperture  PCB Dimensions: 28.2mm (length) * 13.1mm (W) * 11.5mm (H)  Wire length: 20cm  Weight:. 7g