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CK9561 DIY 4-Sound Voice Alarm IC Modules - Brown + Silver ( 4 PCS )
The module can generate four kinds of different sounds: the sound of police cars£¬ fire alarm£¬ ambulance alarm£¬ machine gunfire with a few external components. It is widely used in toys DIY projects. Operating voltage range: 2.4~3.6V DC. Application schematic: