Output Volume Adjustable Special MIC Microphone Module Audio Pickup Adapter Module with Pre-amplifier for CCTV IP Camera Accesso

High-concerned chemical：None Built-in Battery：No Diaphragm：S-Mall Polar Patterns：Uni-directional Package：No Communication：WireLess Set Type：Single Microphone Transducer：Condenser Microphone Use：Conference Microphone Style：Hanging Microphones Origin：Mainland China Certification：NONE Product Name：Pickup Microphone Transmission Distance：1000m Material：PCB

High-concerned chemical: None Built-in Battery: No Diaphragm: S-Mall Polar Patterns: Uni-directional Package: No Communication: WireLess Set Type: Single Microphone Transducer: Condenser Microphone Use: Conference Microphone Style: Hanging Microphones Origin: Mainland China Certification: NONE Product Name: Pickup Microphone Transmission Distance: 1000m Material: PCB