![]() Manual fine adjustment is available for the laser focus for targets between 15m and 300m away. It can be used to target and transmit, as well as receive long range optics. The device includes a laser source in the sensor, which meets eye safe laser Class 1 to prevent eye injuries, a precision interferometer, an inline and parallax-free color camera. It features two components: the infrared laser sensor and the monitor unit. After that, the signal will pass through decoding and convertion to standard audio signal. This shift is then extracted from the laser light. The vibrations, caused by a speaker, cause a backscatter laser light frequency (Doppler) shift. The beam detects vibrations, turns them into an electrical signal and then amplifies them and creates an audible output. ![]() Some of the targets that could be used include papers, leaves on a plant indoors, pictures hanging on a wall, seat cushions, window panes, and clothing. It can detect speech, and the best sensitivity occurs when objects are thin, soft, or lightweight. The sensor can collect the vibrations in various surfaces, as mentioned. During operation the system eliminates ambient interferences, noises. This allows users to target those in closed rooms through windows. The laser is unseen by human eyes or common cameras. The microphone picks up on surface vibrations, and it has the power to do all of this independent from the target optical conditions. The unit is used to perform surveillance and record speech of a person who might be up to 300m away, in a vehicle, building, or elsewhere. The device also happens to be quite easy to use. The unit has a fantastic operating range with minimum laser power, providing high performance surveillance, while still being safe. This makes the technology fully robust to various surfaces and laser intensity. The backscatter laser light frequency shift makes it possible for the speech to be extracted. It does not matter if the targets are inside the building (office, apartment, etc) or outside. This device has the ability to detect vibrations caused by speech at various angles and on many surfaces. This allows for great speech detection and speech intelligibility even when the operating in noisy environments. It features an unseen infrared laser along with advanced DSP technologies. The device uses the unique interferometric laser technology, which makes it a top choice for this type of work. The unit provides a range of benefits for those in the field who need to perform surveillance. Highest level of speech intelligibility.No physical entering needed for installation.Requires the minimum vibrating of surfaces to allow surveillance via window s, f.e.Noise robust, no interference from surrounding noise.The unit is safe for the eyes and totally stealth.Fast and simple start to work and target aiming.Verbal communication can be retrieved from materials such as metallic elements, cloths, paper and plastic.Acoustic surveillance /observation up to 300m.The microphone is intended for audio surveillance on large remote distances.
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