Can detect the intensity of the sound environment Sensitivity adjustable (shown in blue digital potentiometer control) With the retaining bolt hole, convenient installation Output form digital switch output (0 and 1 high and low level) Signal output indication Single channel signal output The output effective signal is low level When there is sound,outputs low level and the signal light Can be used for Acoustic control light , give sound and light alarm working with Photosensitive sensor ,and sound control,sound detect Circuit board output switch quantity Working voltage:DC 3.3-5V Small board PCB size: 3.4 x 1.6 cm
