Product overview A compact security microphone designed for CCTV systems and any device that accepts AV input, including DVR, VCR, and TV. Boosts low microphone output voltage to a usable level while providing adjustable sensitivity, low noise, and clear audio pickup across small to medium sized monitoring areas. Key benefits Improves weak microphone signals so they can be recorded or monitored by AV input devices. Adjustable sensitivity lets you tailor audio pickup to the environment and reduce unwanted background noise. Low noise and fidelity circuitry preserves audio clarity for better evidence or monitoring quality. Wide coverage for typical indoor areas, approximately 10 to 50 square meters. Compact, lightweight, and easy to add to existing CCTV or AV setups. Main features Compatibility: Works with devices that accept AV input such as DVR, VCR, TV. Function: Raises a microphone low output voltage to a stronger, usable level. Sensitivity: sensitivity audio pickup with adjustable sensitivity control. Performance: Low noise, fidelity audio reproduction. Monitoring range: Approximately 10 to 50 square meters. Power: DC 912V, current 15mA for low power consumption. Output impedance: 600 ohm for consistent signal matching. Connectors: Red (DC12V Input), Black (DC12V Output), White (). Cable length: About 42 cm. Color and material: Black plastic housing; lightweight construction. Package weight: About 29 g. What is in the box 1 Audio Pickup Device Note: Other items shown in pictures are not included. Practical use scenarios Retail counter or small : Add clear audio to CCTV recordings for cash register and customer interactions within a 10 to 50 square meter area. Office or meeting room monitoring: Improve microphone output for recording or live monitoring of conversations and entrance areas. Reception area and front desks: Capture clear audio at points of entry to complement video evidence and maintain situational awareness. Installation and compatibility notes Designed for simple integration with AV input devices. Confirm your DVR, VCR, or TV supports external microphone input. Power with a DC 912V source. Observe connector color coding: Red is DC12V input, Black is DC12V output, White is the third connector as supplied. Compact plastic housing and 42 cm cable make placement flexible for most indoor setups. Technical specifications Color: Black Material: Plastic Voltage: DC 912V Current: 15 mA Output Impedance: 600 ohm Monitoring Range: 1050 square meter Connector: Red (DC12V Input), Black (DC12V Output), White () Cable Length: About 42 cm Package Weight: About 29 g This audio pickup device is a practical addon to CCTV and AV recording systems when clearer, stronger microphone signals are required for monitoring and recording in small to medium indoor spaces.