Check the listing for details. CCTV Professional Microphone audio Pickup Device High Sensitivity DC12V device. Color: White, Condition: New. Listed at 31.75 USD. Features:100% brand new and high quality. CCTV High Gain/Fidelity 70db Professional Microphone This high quality CCTV microphone will require a 12v power connection to allow it to work. This is a perfect addition to installations where large areas are required to be covered. 1. Using split block design easy to install and demount. 2. Built-in Imported chips, high sensitivity, clear voice. 3. Integrated import front audio amplifier, microphone can drive directly active speaker, DVR and recorder. 4. The unique design of the "electronic noise dynamic closed loop suppression circuit" can eliminate "hiss/interference" electronic noise, realize perfect radio. 5. Using Dolby noise reduction technology, less noise. 6. Using echo eliminate technology, effectively reduce the echo. 7. Use 3 core 0.5 mm 3 km RVVP shielded cable transmission distortion. 8. Automatic gain control (AGC) circuit. 9. Suit for place such as police, court, meeting room. Interrogation room, bank, etc. Specifications:Color: As shown in the figure Quantity: 1pc