GSM bugging device in desktop calculator

GSM listening device in desktop calculator – discreet audio surveillance for the office

This GSM listening device is discreetly integrated into a fully functional office desktop calculator. The calculator can be used as usual, while the built-in GSM module allows direct audio access via the mobile network. A call is enough to hear the room acoustics in the area of the integrated microphone live.

The integrated voice activation can automatically trigger a callback when noise activity is detected. The corresponding functions can be controlled via SMS. Due to its everyday design, the device is particularly suitable for office, work, and meeting environments.

Your advantages in discreet operations:

• Discreet integration – GSM-Modul in einem voll funktionsfähigen Tischrechner
• Natural placement – besonders passend für Schreibtische, Büros und Arbeitsräume
• Worldwide audio access – über das Mobilfunknetz unabhängig von der Entfernung erreichbar
• voice activation – automatischer Rückruf bei erkannter Geräuschaktivität
• Sensitive microphone – akustische Erfassung im Bereich von bis zu ca. 7 Metern
• Long standby time – bis zu 30 Tage Bereitschaft

Our technical assessment

The special strength of this model lies in its natural integration into classic office and work environments. A desktop calculator is an everyday item that can permanently sit on a desk, making it significantly less conspicuous than an additionally placed technical device.

With an integrated 2,500 mAh battery and a standby time of up to 30 days, the device offers significantly more autonomy than many compact mini-GSM modules. At the same time, it remains independent of a permanent mains power supply. However, the active operating time of about 24 hours shows that this model is more designed for longer standby phases with occasional live access rather than continuous monitoring operation.

For applications with continuous power supply, mains or USB-powered devices are less maintenance-intensive in the long term. However, if inconspicuous office integration, several weeks of standby, and flexible placement without fixed power supply are the priority, the GSM desktop calculator offers a very balanced solution.

Typical areas of application:

• Acoustic monitoring of office or business premises
• Study rooms, home offices, and meeting areas
• Applications where a common desktop form factor is advantageous
• Long-term readiness without permanent mains power supply
• Stationary applications with occasional direct audio access

Technical data:

• Supported GSM frequencies: 850/900/1800/1900 MHz
• Network standards: 2G, 3G
• Audio sensitivity: –75 dB
• Microphone range: up to approximately 7 m
• Battery: 3.7 V, 2,500 mAh
• Standby time: up to 30 days
• Operating time in active mode: approximately 24 hours
• Dimensions: 200 × 160 × 50 mm

Scope of delivery:

• GSM listening device in desktop calculator
• USB charging cable
• User manual

GSM desktop calculator combines an inconspicuous office form factor with several weeks of standby time and direct audio access via the mobile network. This makes it particularly suitable for stationary applications where discreet placement and flexible power independence are equally important.