RF Signal Protection and Audio Detection
Counter-surveillance instruments for phones, recorders and mechanical timer devices.
What this category solves
- Phones and recorders cannot be reliably confiscated at a meeting room door
- A sealed package gives no visual or metal signature of a timer device
- Approaching a suspect item to listen puts an operator at risk
- Corroded metal joints cause false alarms on simple junction detectors
- Operators cannot justify a call without seeing the underlying signal
Who it is for
- Organisations holding commercially sensitive negotiations
- Government offices and confidential facilities
- Anti-terrorism units assessing suspicious packages
- Examination authorities enforcing a no-phone rule
What the range gives you
- RF audio detection hearing a mechanical watch through 100 mm foam plus 200 mm paper
- Remote distortion-free listening from a drone or robot
- Cell phone, semiconductor junction and metal oxide junction identified separately
- Spectrum, waterfall and peak curve analysis in Professional Mode
- IP65 field rating with up to 20 hours standby
Typical scenarios
- Remote assessment of a suspicious package
- Counter-surveillance sweeps of rooms and containers
- Phone detection at a confidential facility entrance
- Examination halls preventing device use
Industries that buy this category
Guides for this category
Trace Detection for Explosives and Narcotics How It Works
Trace detection finds residue left by handling, which is how a checkpoint catches someone carrying nothing at that moment.
Finding Electronic Devices That Are Switched Off
An RF sweep finds transmitters. A non-linear junction detector finds the semiconductor, which is why it works on a device that is powered down.
RF Signal Protection and Audio Detection FAQ
What does the VT-808 actually detect
Mechanical movement. It hears a timer mechanism inside packaging, including devices with no semiconductor for a junction detector to find.
Can it be used without approaching the item
Yes, remote distortion-free listening is supported with drones and robots.
How does the VT-818 reduce false alarms
It identifies cell phones, semiconductor junctions and metal oxide junctions as separate categories, so a corroded joint is not reported as a device.
What is the difference between the two detection modes
General Mode classifies automatically for trained users; Professional Mode provides spectrum, waterfall and peak curve diagrams for detailed analysis.
How far can a phone be detected
Up to 0.5 metres on the VT-818.
Can these be exported to our country
Counter-surveillance equipment is controlled in several markets. Send your destination and intended use on WhatsApp first.
Specifying rf signal protection and audio detection
Tell us the dimensions, the throughput and the environment. We will recommend the model that fits rather than the one at the top of the range.