Listening devices

Professional grade spy bugs and listening devices are at the core of our product line. You will not be able to find any spy bugs on the market that can match the performance of our devices.

Our products come in a range of varieties, which sometimes can seem a bit complicated but we will make the following comparison for you to get to understand them easily. 

Listening devices can be divided into three categories based on their modes of operation, namely 

  1. GSM devices (Vario series, Longlife series, 3G listening devices and Glite Series)
  2. UHF devices and
  3. Covert listening devices 

We offer various products that come under these three categories, which we will explain in the later parts of this article.

We offer the best hidden listening devices and professional-grade spy bugs on the market. You can choose the device that best matches your needs from our exhaustive selection of a wide range of spy listening devices. You can install these audio spy bugs in your office, home, warehouse, or car. With advanced technology and low battery usage, they are ideal for being camouflaged in everyday objects and left to monitor suspicious activity for several days, months, or years depending on the battery capacity.

GSM basic HQ listening devices

GSM devices are ideal for people who want to monitor their house or office remotely. These remote listening devices can be connected to WiFi when you insert a sim card in them and thus you can monitor what is going on in the said place in real-time. We have a variety of custom-developed GSM listening devices, our devices place a lot of emphasis upon endurance and sound quality. Our starting series is called LongLife and Vario. They are very simple when it comes to usage and exhibit very long standby times. The main difference between LongLife and Vario is that the LongLife series has a built-in battery in the device. Vario is used more as a module, so it can be equipped with a custom battery up to 24000mAh for extremely large periods of listening. They are also equipped with automatic voice activation which is convenient and increases the endurance of the device as well, and you don’t have to record hours of the static sound.

We have developed a new product line of listening devices called GLite which utilizes the latest chipset. We have tried to get the best possible microphones available on the market, Knowles. The GSM network works on the Mono bases, therefore when you see two microphones on some devices, please be sure that one microphone is used for VOX and the other for the actual transmission of audio.

UHF listening devices

Listening devices which use radio frequency and are denoted by UHF (ultra high frequency) operate on higher frequencies above 400 mHz. Their main advantage over GSM listening devices is the quality of sound, you will get perfectly clean transition with almost 0 disturbances. One of the main disadvantages is the need for a receiver to be placed within the reach of the UHF listening device.  There are a variety of uses for the UHF listening, which can be mounted into objects or simply placed onto a 220V power source. 

Covert listening devices

In our selection, you will find a variety of appliances or electronic devices that are secretly sound recording devices. They are especially useful for companies that have large storage areas or offices and want to monitor the behavior of strangers. Being hidden in everyday objects, they are ideal for covert sound recording that will not attract unwanted attention from perpetrators.  Be it a meeting with people you can’t trust, or a partner you’re suspicious of cheating, you can use these devices to discreetly record their whereabouts.  They are hidden in a multitude of objects from pens, watches, and pen drives to smoke detectors making them extremely hard to make out from regular pens or smoke detectors.

 It is also possible to connect some devices directly to a 220v power source. The inconspicuous design in combination with the clean and crisp audio reception makes this listening device ideal for long-term monitoring.

We advise you to consult with one of our specialists to find a particular solution to your individual need. We have a set of technicians who can assist you with personalizing your device or suggest you the most suitable solution.

Devices in this section are created for long-term camouflaged observation. Battery life ranges from 6000 mAh to 22000 mAh and more (if needed). Due to battery weight and size, these devices are slightly larger than normal listening devices although this is not noticeable to the naked eye.  

Some of our flagship series under the different categories are the following: 

LongLife Series

LongLife series is a high-quality series designed for advanced usage of GSM bugs. They are crafted from the latest materials. LONGLIFE is a battery-based module that comes in a number of different variations, there is a PRO version that has a better module with regard to signal and sound quality.

The standard version has a very good sound as it, the PRO versions also benefit from better signal quality due to the extended antenna. For both types, there is a possibility of purchasing the "+" version which comes with longer microphone cables.

We are capable of modifying each unit according to your needs, for our customers we offer custom batteries or antennas depending on the environment they are working in. 

Vario Series 

VARIO series is a similar series to our LONGLIFE series but does not come with a battery embedded in the module. Vario is customizable, allowing you the option to select your own capacity, with the largest one lasting up to 90 days. 

VARIO module is much smaller and the "+" version gives you the option of having a longer microphone. 

VARIO: Battery life up to 90 days

VARIO +: Battery life up to 90 days + EXTENDED MICROPHONES

Glite Pro Series

The Glite PRO series is our latest GSM listening device series that heavily outperforms the industry average in terms of functionality. The idea was to create a device that will have great sound and a strong set of commands to satisfy the needs of private users of GSM listening devices with advanced functionality needs.  The Glite PRO series has outstanding sound quality as it used the Knowles microphone.

There are 2 different versions for each GLite PRO series, the original version, and the plus "+" version. The plus "+" model has the added feature of an extended Knowles microphone. This gives the user the ability to mount the unit inside walls, sockets, or cars.

3G Series

The 3G Listening device is the most advanced listening unit on the market today. By combining the latest technology, it achieves parameters that are several times higher than all competing products. This difference is mainly present in the sound quality as well as in the battery power of the device.

Dual Voice recording and listening devices

The Stronic URP GSM K+ is the new and latest product from our facility. It is a combination between a listening and recording device. The listening module used is based on the very popular PRO K+ Vario series and the recording module is based on the URP voice recorder series. This device records locally on a memory of 8 GB while it can at the same time activate the callback function so you can listen at the same time to what is going on in the monitored area.

What is the difference between a listening device and a recording device, and what suits you most?

Even though it may seem to the average person that both voice recorders and listening devices are for audio surveillance as they capture the sound signals in their immediate environment, there is a distinct difference in their mode of operation and transmission of the stored signals.

Audio spy bugs or listening devices usually send real-time audio signals to the listener over much higher frequencies (usually a mobile network for private users because of legality issues) therefore they are even used by professionals. Listening bugs helps you to monitor people from very far away, and are ideal when either the listener needs to be able to react quickly to what has been heard or when it is very difficult to recover recorded evidence.

Of course, you can use voice recorders for your needs, which usually store the information in a memory card for you to listen to and replay the audio multiple times. For that, we advise you to visit our Voice Recorders page.