If you are new to the concept of parabolic listening devices, bionic ears, and optical listening devices, you may be asking why anyone would need such a thing. Covert audio listening devices have evolved considerably over the years. The most popular method of listening from a distance was via UHF technology (Ultra High Frequency) which is transmitting crystal controlled signals from audio device to a hand held receiver some short distance away. The upshot of such equipment is the extremely small size and exceptional listening quality, however, a broadcasting license is mandatory to operate.

Also, the dome of the Ex Electronix Express listening device is flimsy plastic, so be careful not to break it. Plus, it’s compatible with any smartphone out there. So you can easily transfer files to your phone using Bluetooth technology. The headphones meet our expectations as well. When the device starts receiving audio, it transfers at a comfortable volume to the earpiece, providing a sound-quality without interferences. Whether you’re catching soundwaves from long or short distances, the audio received is pretty clear. That’s especially true in rainy or windy conditions or when something obstructs you and your target point.It features headphones, volume control, an indicator light, a viewfinder hole, a sound-collecting dish, and a microphone – all features of a beginner listening ear and one that might be most suitable for domestic/indoor listening purposes. Long range listening devices work by capturing, amplifying, and refining sound waves from a distance. Parabolic listening devices, for example, use a dish to focus and magnify distant sounds. Laser and optical devices utilize a beam of light reflected off a distant object to detect the vibrations caused by sound waves. What should I consider when purchasing a Long Range Listening Device? Endoacustica’s bugging devices are designed to be extremely discreet with their small size and can be placed anywhere in a room. GSM functionality can allow you to add a SIM card to the device. This gives you the ability to listen in on conversations from an unlimited distance as if on a phone call. ... Long-range listening devices allow you to listen to the sounds of nature without disturbing the natural environment. You can listen to the sound of the wind, the sound of water, or the sound of animals. These devices amplify the sound and let you hear it. Long range listening devices, often marketed as bionic ears, optical listening devices, laser microphones, or parabolic listening devices, are products designed to capture clear audio at a distance. These devices vary greatly in features, quality, and price, ranging from professional-grade equipment used by law enforcement to affordable devices designed for hobbies like birdwatching. How do Long Range Listening Devices work?

Sound waves travel through air and water. And since air is primarily transparent, sound travels pretty fast. Air molecules vibrate because of heat and pressure changes. And those vibrations produce sound. The speed of sound depends upon temperature. So, sound travels fastest at lower temperatures. The speed of sound increases by 2% per degree Celsius. That means that sound travels faster at night than during the day.We can modify each unit according to your needs, for our customers, we offer custom batteries or antennas depending on the environment they are working in. Apart from real-time listening features, there are some additional features that can help a lot when you are using the long-range listening device. One such feature is the built-in recording capability that you will find on most long distance recording devices. This feature can really come in handy if you are planning to listen to a communication happening at a distance and record it as proof for future confrontations. Because 3G listening devices use cellular networks to transmit audio, they can be accessed from anywhere with a cellular connection, making them a powerful tool for remote monitoring. We supply only a 3G module without a battery depending on the specific device and intended use, we can also customize it. Visible Devices: Parabolic discs and microphones can capture impressive audio at a distance, but they are bulkier and need to be directly aimed at the audio source. Using one of these at a church service or sporting event could be somewhat conspicuous.