4PCS Audio Pickup Device Tiny Spy Mini Mic Microphones for CCTV Home Surveillance Security Camera
2. HIFROM focus on provide high quality products at fair price: if you unsatisfy with our product, you can return to our USA warehouse, no risk.
1. Collect audio evidence as important as capturing video evidence
2. Preamplifier used to increase a microphone's low output voltage to a stronger usable level
3. Built in on board IC preamp, low noise, high gain and auto level adjustment
4. Pick up every sound with the super high gain micro audio system
5. 1 ft cable attached with a RCA connector for audio and a power plug of 2.1mm center positive