Infrared detector for portable anti-positioning, anti-monitoring and anti-camera detection covering 10MHz-5GHz frequency bands with audible alarm and vibration alert modes for use in security applications.
Portable infrared security detector with 10MHz-5GHz frequency coverage and dual alarm modes

This portable infrared detector offers practical security monitoring across a comprehensive frequency spectrum from 10MHz to 5GHz, making it suitable for detecting unauthorised recording, video surveillance, positioning attempts and theft-related activities. With its compact 91×37×13mm dimensions and lightweight 36g construction, the device maintains discreet portability while providing reliable detection within a 0.1-6 metre operational range. The 5V USB-powered unit operates effectively without requiring complex installation, delivering straightforward security monitoring through both audible alarm and vibration notification modes.
Features and Construction

The AK400 model detector combines infrared detection technology with broad-frequency monitoring capabilities to address various security concerns. Its construction prioritises functional reliability within a portable form factor, using electronic components designed for consistent performance across the specified frequency bands.
Material and Build
The detector's construction incorporates electronic circuitry optimised for signal detection across the 10MHz-5GHz spectrum, paired with infrared components for motion and presence sensing. The plastic housing provides structural protection while maintaining the device's 36g lightweight profile. This material selection supports the portable nature of the unit without compromising its detection capabilities within the specified operational parameters.
Size and Practical Fit
With dimensions measuring 91mm in length, 37mm in width and 13mm in depth, the detector maintains a compact footprint suitable for discreet placement in various environments. The 36g weight ensures easy portability, while the 0.1-6 metre operational range defines its effective coverage area. These specifications make the unit practical for personal security applications where close-proximity monitoring is required without conspicuous equipment.
Uses and Placement

The detector serves multiple security functions including anti-recording, anti-stealing, anti-video, anti-positioning and anti-theft applications. Its operational characteristics make it suitable for both professional security settings and personal privacy protection scenarios where unauthorised monitoring represents a concern.
Event or Professional Use
In professional security contexts, the detector's 10MHz-5GHz frequency coverage addresses potential monitoring threats across common surveillance bands. The 0.1-6 metre operational range suits close-quarters security applications, while the dual alarm modes provide flexibility based on environmental noise considerations. The USB power connection simplifies deployment in temporary security setups or event-based protection scenarios where reliable power sources are available.
Everyday Home Use
For personal privacy protection, the detector's compact dimensions and lightweight construction facilitate discreet placement in residential settings. The infrared detection capability combined with frequency monitoring offers layered protection against various monitoring technologies. The vibration alarm mode provides discreet notification in home environments where audible alerts might be undesirable, while the audible mode offers immediate attention-grabbing alerts when needed.
Benefits and Buying Value

The detector delivers practical security monitoring through technical specifications focused on reliable performance rather than excessive features. Its value emerges from straightforward functionality addressing specific security concerns without requiring specialised installation or maintenance.
Reuse and Low Maintenance
The device supports repeated use through its durable construction and simple 5V USB power requirement, which facilitates easy recharging and continuous operation. The infrared detection components maintain consistent performance without regular calibration requirements, while the electronic frequency detection circuitry operates reliably across the specified bands. This low-maintenance approach makes the detector suitable for ongoing security applications without demanding technical expertise.
Why Choose This Product
This detector provides a practical security solution through its combination of broad frequency coverage, dual alert modes and portable design. The 10MHz-5GHz spectrum coverage addresses multiple potential monitoring technologies, while the 0.1-6 metre range defines clear operational boundaries. The choice between audible alarm and vibration modes accommodates different environmental requirements, and the compact 91×37×13mm dimensions with 36g weight ensure easy portability. These characteristics make the unit suitable for users seeking straightforward security monitoring without complex configuration requirements.
