This is a waterproof directional monitoring microphone, a professional outdoor intercom microphone designed for close-range sound pickup in outdoor environments. It is waterproof, moisture-resistant, dustproof, and built to deliver excellent sound quality. Equipped with a professional directional condenser microphone, it provides clear o capture within 5 meters. The directional design effectively reduces interference from ambient noise such as highways, shopping malls, and pedestrian traffic. The built-in low-frequency noise filtering function enhances speech clarity. Advanced chip-based noise processing and a waterproof microphone design ensure reliable performance in wet conditions, meeting IP67 waterproof standards and allowing operation underwater up to 2 meters. The microphone includes surge protection, power polarity reversal protection, and power protection circuits. Ideal for various outdoor o surveillance applications, including toll stations, train stations, buses, and more. Specifications: - Size: 36mm (Diameter) x 43mm (H) - Installation: Bolt mounting - Wiring length: 80cm - Waterproof rating: IP67 - Pickup coverage: Up to 30 square meters - o transmission distance: Up to 3000 meters - Frequency response: 20Hz - 20kHz - Sensitivity: -48dB - Directivity: Directional - Signal-to-noise ratio: 80dB - Dynamic range: 100dB - Maximum sound pressure level: 120dB - Output impedance: 600 ohms (unbalanced) - Microphone type: Single condenser microphone - Applications: Post booths, toll booths, outdoor intercom systems - Circuit protection: Surge protection, reverse polarity protection - Connection: Power (DC12V, red), o output (AOUT, yellow), Ground (GND, black) - Cable requirement: 3x0.5mm² RVVP shielded cable - Operating voltage: DC12V (stabilized) - Operating temperature: -25°C to 70°C - Weight: Approx. 81g - Color: Silver - Material: Metal Note: BNC connectors, power supplies, and other accessories are not included. Package includes: 1 x o Pickup Microphone (accessories only; other items not included) Note: Lighting and display differences may cause slight color variations between the image and actual product. Measurement tolerance: +/- 1-3cm.