SZ Vodasafe VS-830 Infrared Imaging Non-Linear Junction Detector
SZ Vodasafe VS-830 is an innovative integrated infrared thermal imaging non-linear junction detector (NLJD) independently developed by SZ Vodasafe, perfectly combining traditional harmonic semiconductor detection technology with real-time thermal infrared imaging module.
Different from single-function conventional non-linear junction detectors, VS-830 delivers dual verification detection: it identifies hidden semiconductor electronic equipment via second/third harmonic analysis while simultaneously presenting real-time thermal contour images of suspicious targets. This dual-mode design drastically cuts false alarm and missed detection rates, greatly boosting inspection efficiency and accuracy for TSCM, law enforcement, and security teams.
The unit locates concealed electronic devices embedded inside walls, floors, ceilings, lamps, furniture, suitcases, and sealed containers—whether the target electronics are powered on, powered off, or transmitting radio signals. Operators receive multi-dimensional alert feedback including on-screen thermal visualization, audio prompts, headphone monitoring, and vibration reminders to quickly pinpoint surveillance hardware, electronic detonators, and unauthorized semiconductor devices.

Working Principle
VS-830 integrates two core detection subsystems with AI algorithm co-processing:
1.Non-Linear Harmonic Detection Subsystem
The transmitter emits S-band fundamental RF waves toward target inspection areas. When radio waves hit semiconductor junctions (diodes, transistors, IC chips, SIM modules) inside hidden electronics, the hardware generates distinct second and third harmonic signals. The built-in high-sensitivity receiver captures these harmonic echoes, and proprietary AI algorithms analyze harmonic characteristic curves to distinguish genuine electronic semiconductors from metal corrosion joints or ordinary metal interference, eliminating false triggers from non-electronic metal objects.
2.Real-Time Infrared Thermal Imaging Subsystem
Synchronously operating with harmonic scanning, the thermal infrared module captures real-time heat radiation contours of all objects within the detection field of view. Heat signatures from powered dormant electronics, battery-powered bugs, and recording devices are displayed directly on the screen. Operators cross-reference harmonic alarm data with thermal imaging shapes to confirm target types and locations, resolving ambiguous alerts common to standalone NLJD equipment.

Wide Application Scenarios
SZ Vodasafe VS-830 is a mission-critical inspection tool widely deployed for government agencies, police forces, prisons, judicial institutions, corporate security teams, VIP privacy protection, and counter-surveillance operations:
Corporate Confidentiality & Trade Secret Protection
Sweep core conference rooms, confidential offices, and negotiation spaces to detect unauthorized hidden surveillance hardware: wiretap bugs, hidden mobile phones, SIM card tracking devices, miniature transmitters, and covert recording modules. Prevent industrial espionage and confidential information leakage.
EOD & Public Security Bomb Disposal
Deploy in hazardous incident zones to identify concealed electronic initiation circuits, remote control detonators, timer modules, and wired triggering devices buried in debris, walls, or packages, supporting safe ordnance disposal and risk elimination.
Personal & Residential Privacy Safeguard
Inspect hotel rooms, rental apartments, villas, and private living spaces to uncover hidden pinhole cameras, voice recording pens, wireless audio bugs, and portable surveillance gadgets, blocking illegal secret filming and eavesdropping violations.
Prison & Judicial Facility Inspection
Conduct routine contraband sweeps to detect smuggled mobile phones, hidden earpieces, recording devices, and electronic communication hardware concealed by detainees inside walls, furniture, or personal belongings.
Government & VIP Counter-Surveillance
Secure official meeting venues, VIP accommodation, and confidential briefing areas to eliminate covert surveillance equipment and protect state secrets and personnel privacy.

Product Advantages
1.Fully Independent Intellectual Property
100% self-developed hardware circuits, harmonic detection algorithms, and thermal imaging software, free from overseas technical restrictions. Supports rapid customized function development and on-demand algorithm optimization, ensuring long-term supply security and data confidentiality for government and military clients.
2.Ultra-Low False Alarm Rate & High Inspection Efficiency
Dual verification of harmonic semiconductor signals + real-time thermal imaging visual confirmation. Operators directly observe target outlines via infrared screen to judge device categories, effectively filtering metal corrosion, metal pipe, and structural metal interference that causes false alarms on ordinary NLJDs.
3.Superior Semiconductor Detection Accuracy
Built-in dedicated second and third harmonic spectrum analysis module, capable of rapidly identifying tiny semiconductor components including SIM chips, micro ICs, miniature diode circuits, and low-power surveillance hardware that other detectors may overlook.
4.Ultra-High Penetration & Long-Range Sensitivity
Detects semiconductors hidden deep inside furniture and up to 370mm thick brick walls; maximum effective detection distance exceeds 6 meters, meeting the highest Class C standard of GA1236-2015 Chinese public safety industry specification.
5.Human-Body Radiation Safety
Fully compliant with HJ/T10.2 Radiation Environmental Protection Guidelines. The RF emission power meets strict low-radiation limits, posing zero health risks to operators and surrounding personnel during long-duration continuous use.
6.Intuitive, Minimalist Human-Machine Operation
Simplified multi-key operation interface with integrated visual, audio, and vibration multi-channel alerts. Supports wired headphone access for silent inspection in sensitive environments; the screen displays real-time infrared thermal images and harmonic signal intensity LED indicators simultaneously, requiring minimal training for new operators.
7.Stable Performance in Extreme Environments
Wide operating temperature range (-30℃ ~ 55℃) and humidity resistance up to 93%RH non-condensing, reliable for outdoor field operations, cold-region law enforcement, and high-humidity indoor inspection tasks. Replaceable lithium battery design enables instant power replacement for uninterrupted all-day sweeps.

Technical Specifications
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Module Category
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Technical Item
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Detailed Parameter Index
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Non-Linear Junction Detection Module
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Transmit Frequency Band
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2.400GHz fundamental wave (2.4GHz–2.5GHz)
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Receivable Harmonic Bands
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2nd harmonic: 4.8GHz–5.0GHz
3rd harmonic: 7.2GHz–7.5GHz
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Max Pulse Transmit Power
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4W (ERIP)
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Receiving Sensitivity
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≤ -140dBm
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Working Voltage
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7.4V DC
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Max Power Consumption Runtime
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7 Hours per single lithium battery
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Thermal Infrared Imaging Module
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Infrared Detector Resolution
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160×120 continuous scanning array
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Pixel Pitch
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12µm
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Thermal Imaging Sensitivity (NETD)
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<50mK (0.050℃)
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Horizontal Field of View
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57°
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Diagonal Field of View
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71°
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Infrared Lens Specification
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f/1.1 large aperture
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Overall Product & Interface Parameters
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Battery Type
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Replaceable lithium battery pack
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Interactive Alert System
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LED signal intensity indicator, audio prompt, headphone jack, vibration alert, real-time thermal image display
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Maximum Detection Distance
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>6m, Class C product conforming to GA1236-2015
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Wall Penetration Capacity
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Detect electronics hidden inside 370mm thick brick walls, Class C GA1236-2015 compliant
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Product Outer Dimensions
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(750mm × 114mm × 108mm) ±5mm
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Outer Carton Packaging Size
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(700mm × 330mm × 180mm) ±10mm
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Net Product Weight
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1.55kg ±0.05kg
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Operating Temperature Range
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-30℃ ~ +55℃
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Operating Humidity
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≤93% relative humidity, no condensation allowed
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SZ Vodasafe VS-830 fully complies with GA1236-2015 Industrial Standard for Non-Linear Junction Detectors, the mandatory national public safety equipment specification of China.
The unit has completed full performance testing and obtained official certification reports issued by two national authoritative testing institutions:
1.National Testing Supervision Center for Quality of Security & Alarm System (Beijing)2.Testing Center for Quality of Security & Police Electronic Products under the Ministry of Public Security
All performance indicators reach the highest Class C grade stipulated in GA1236-2015, satisfying strict procurement standards for police, judicial, government, and military security equipment.

SZ Vodasafe VS-830 breaks through the single detection limitation of traditional non-linear junction detectors by integrating AI harmonic analysis and real-time infrared thermal imaging dual inspection technology. It delivers outstanding deep penetration, ultra-long detection distance, ultra-low false alarm rate, and full environmental adaptability. With fully independent domestic core technology, human-safe low-radiation design, and multi-scenario adaptability for counter-surveillance, EOD, corporate security, and privacy protection, VS-830 is a premium professional-grade hidden electronic device inspection solution trusted by global security practitioners.