Discover the ultimate solution for sound detection with our Through Wall Microphone Amplifier, designed to offer unparalleled sensitivity and penetration. Perfect for detecting leaks and abnormal noises in various environments, this device is a must-have for professionals and DIY enthusiasts alike. Strong Penetration: Equipped with a high-sensitivity sensing head, this device utilizes advanced technology and new components to significantly enhance penetration capabilities. Experience improved sound quality as you carefully adjust the voice frequency to avoid discomfort, ensuring a seamless listening experience. Sound Sensitivity: The high-sensitivity metal alignment, paired with headphones, boosts both sensitivity and sound quality. Effortlessly detect sounds through walls, windows, doors, or armor plates, delivering clear and precise audio feedback for accurate assessments. Versatile Applications: Featuring a 3.5 mm headphone jack, this device can connect to a variety of equipment, including display spectrums, voice recorders, transmitters, and wireless devices (not included). It also supports dual-channel line connections for direct recording. Ideal for detecting abnormal noises in heating ducts, fire ducts, water pipes, underfloor heating systems, automobiles, home plumbing, and more. Convenient Charging Interface: The through-wall microphone includes a charging interface, allowing the built-in battery to be recharged repeatedly. Once fully charged, the device offers 5 to 7 hours of continuous use. The machine jack and upward switch knob make it easy to operate and adjust settings as needed. Easy to Operate: Simply press the device firmly against doors, windows, or walls and adjust the sound with the knob until you achieve clear audio. Capable of emitting sound through wooden walls, bricks, windows, and doors, this device features effective noise filtering and rapid sound detection for efficient use. Enhance your sound detection capabilities with this powerful and versatile Through Wall Microphone Amplifier, designed to deliver exceptional performance and reliability in a wide range of applications.