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Model: FR67
3.5-5.5V Standard Passive Buzzer Module For ArduinoSpecification:Working voltage: 3.5-5.5VWorking current: <25mAPCB Dimension: 18.5mm x 15mm(L x W)Feature:No oscillation source, need square wave (frequency 2K-5K ) to drive.Sound frequency control, you can make a "do re mi fa sol la si" effect.Pac..
Model: FR64
Description:For sound detection module has two outputs:1. AO, analog output, real-time output voltage signal of the microphone2. DO, when the sound intensity reaches a certain threshold, the output high and low signal Module features:1. there is a mounting screw hole 3mm.2. 5v DC power supply3...
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