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The ultimate professional listen through wall system that can hear sound through concrete, metal, wood, brick in fact any solid surface. This serious piece of kit is not for the faint hearted, be warned you can hear through indoor and outdoor walls. Some surfaces work better than others and density / thickness can also restrict its performance. We have received varied results as it depends entirely on the surface you use and many other factors such as distance and volume.
To use simply place the microphone to the surface of interest and listen, it has variable gain and volume settings to adjust. You may need to experiment further with the position of microphone for best result. Guaranteed to hear audible sound through doors / windows / single brick walls and indoor cavity walls.
F-999B professional listen through wall spy ear is a highly sensitive contact and probe microphone amplifier system. Both microphones and amplifier supplied are solid metal built for durability.
Enhanced quality sound and performance capable of hearing conversations in adjoining rooms and houses.
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Features and Specifications
Penetrable surfaces: Cement, Metal, Wood, Iron, Glass, Plastic, Brick
Working time: Continuous monitoring up to 24 hours
Headphone output: 3.5mm stereo @ 250mW
Four audio channel: 1200Hz, 800Hz, 200Hz
Maximum gain amplification: 20000 times
Battery type: 3.7v lithium battery
Microphone sensitivity: -70db
Current consumption: 10mA
Record line output: 2.5mm stereo Jack socket
Battery capacity: 250mA
Package includes:
Sonde / Contact microphone
Probe / Needle microphone
Microphone / Headphone Amplifier
2.5mm-3.5mm stereo record lead
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