Security amp surveillance cameras - Security System Reviews

High Sensitive Pre-amp DreamvasionĀ® Audio Pickup Device Tiny Spy Microphone for Security Camera CCTV Surveillance System Sound Vioce Monitoring with Free Warning

Price:

$7.70

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Covert design, the built-in microprocessor, excellent anti-noise function. Operating-voltageļ¼š 6-12VDC; Frequency response: 100-5500Hz; Bug range: 80 square meters....