Sensitivity adjustable.High Sensitivity Audio Sound Pick Up | Wide monitoring range of about 10-50 square meter.Low noise,high-fidelity | Used to increase a microphone's low output voltage to a stronger usable level | This security microphone for CCTV security camera is compatible with devices that accept AV input, like DVR, VCR, TV, etc | We provide a 6 months warranty for this audio pickup mic.If you have any quality problem. We aim at "the best can be better" as operation tenet. Your satisfaction is our happiness
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Item# : SPM18394721804
Model # : RNAB07B7L1BHL