This is a waterproof directional monitoring head, a professional outdoor intercom microphone used for close range sound pickup outdoors. It is waterproof, moisture-proof, dustproof, explosion-proof, and has excellent sound quality.Using a professional directional condenser microphone head, clear pickup within 5 meters at close range. Directional design can effectively prevent interference from highways, shopping malls, and pedestrian noise. The built-in low-frequency noise filtering function greatly improves speech clarity.Adopting imported chip noise treatment and waterproof microphone head, it is not afraid of water spray or immersion, reaching IP67 waterproof level, and can be used for underwater work up to 2 meters.The pickup head is equipped with anti-thunder protection, power polarity reversal protection, and power protection modules.Widely applicable to various outdoor sound pickup occasions, such as toll stations, train stations, buses, etcSize: 36MM (Diameter) x 43MM (H)Installation method: bolt installationWiring length: 80CMWaterproof level: IP67 outdoor waterproofPick up distance: 30 square metersAudio transmission distance: 3000 metersFrequency response: 20-20K HzSensitivity: -48dBDirectional feature: Full directionalSignal to noise ratio: 80dBDynamic range: 100dBMaximum withstand sound pressure: 120dBOutput impedance: 600 unbalancedNumber of microphones: single microphoneScope of application: Post booths, toll booths, outdoor intercoms, etcCircuit protection: anti-thunder protection, power polarity reversal protectionConnection method: Power cord DC12V (red), audio cable AOUT (yellow), ground wire GND (black)Transmission cable: 3x0.5MM2 RVVP shielded cableWorking voltage: DC stabilized voltage DC12VWorking environment temperature: -25 -70 Weight: Approximately 81 gramsColour:SilverMaterial:MetalNote: Any BNC, RCA connectors, or power supplies are not included.Package Contents:1 x Audio Pickup AccessoriesOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.