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-proof, dustproof, and built to deliver excellent sound quality. Equipped with a professional directional condenser microphone, it provides clear audio 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. Featuring advanced chip-based noise processing and a waterproof microphone unit, it is resistant to water and immersion, achieving an IP67 waterproof rating and suitable for underwater operation up to 2 meters. The microphone includes surge protection, power polarity reversal protection, and power protection circuits. Suitable for various outdoor audio pickup applications including toll stations, train stations, buses, and more.Specifications: Size: 36mm (Diameter) x 43mm (H) Installation method: Bolt mounting Wiring length: 80cm Waterproof rating: IP67 Pickup coverage: 30 square meters Audio transmission distance: 3000 meters Frequency response: 20-20kHz Sensitivity: -48dB Directivity: Directional Signal-to-noise ratio: 80dB Dynamic range: 100dB Maximum sound pressure level: 120dB Output impedance: 600 ohms (unbalanced) Number of microphones: Single Applications: Post booths, toll booths, outdoor intercom systems Circuit protection: Surge protection, power polarity reversal protection Connection: Power wire DC12V (red), audio output AOUT (yellow), ground wire GND (black) Cable requirement: 3x0.5mm RVVP shielded cable Working voltage: DC12V (stabilized) Operating temperature: -25C to 70C Weight: Approximately 81 grams Color: Silver Material: Metal Note: BNC connectors, power supplies, and other accessories are not included. Package includes: 1 x Audio Pickup Microphone (accessories only; other items not included) Note: Lighting and display settings may cause slight color variations between the image and the actual product. Measurement tolerance: +/- 1-3cm.