DT-820
Compact NLJD (Nonlinear Junction Detector) for Entry
General Configuration:
√ Working Frequency Range: 2.404GHz-2.472GHz
√ Receiving Harmonic Range: Auto
√ Receiving Sensitivity: Less than -140dBm
√ Battery: Li Battery, working over 5 Hours
√ Interactive Interface: LCD, Audio, Vibration
√ Detection Distance: GPS module @ 400-500mm; Mobile Phone @ 180-220mm; SIM Card @ 90-120mm
If you are looking for high-end portable NLJD device, DT-820 is highly recommended.
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Description:
DT-820 is a miniaturized non linear junction detector working as a professional tscm equipment. It can detect electronic devices hidden in walls, floors, ceilings, lamps, furniture or containers, whether they are transmitting signals or switching on or off, and give alarm by display, sound and vibration. This non linear junction detector can find the target equipment for protecting organizations and individuals Private information.
Technical Principles:
Non linear junction detector emits S-band fundamental wave to the target area or object, and the receiver captures the second and third harmonics generated by the target object. Artificial intelligence algorithm is used to analyze the harmonic law, so as to detect and identify the electronic equipment with non-linear junctions. For a detailed introduction of NLJD working principle, please check [What is a Non-Linear Junction Detector? Ultimate Guide].
Application scenarios:
Non linear junction detector can be widely used in government, public security, prison, justice, army, education examination, business security and personal privacy protection, etc.
Business Safety: Detecting unauthorized electronic devices, such as eavesdroppers, mobile phones and devices with SIM cards, hidden in company board rooms or secret offices;
Public Safety: Detecting electronic devices hidden or prohibited from use in safe areas, such as detonating devices, remote controllers, etc.
Personal Privacy Protection: Hidden cameras and surveillance devices such as recording pens, cameras, etc. in residential buildings and hotels.
Features of DT-820 Compact NLJD:
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High Positioning Accuracy: Our non linear junction detector adopts 2400Mhz radio frequency detection technology with high precision positioning characteristics.
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High Semiconductor Recognition Ability: With built-in spectrum analyzer supporting second and third harmonic detection, it can quickly and effectively identify devices containing semiconductors.
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High Sensitivity: Especially for SIM card devices with high sensitivity, mobile communications devices can be quickly detected.
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Low False Alarm Rate: built-in nondestructive detection algorithm greatly improves the detection capability, and the false alarm rate is very low.
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High Safety and Reliability: meets the requirements of electromagnetic radiation and absolute safety to human body.
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Flexible Operation: Supports automatic transmission power and manual mode selection, easy to operate manually.
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User-friendly interface: support OLED visual graphical interface, vivid display of power emission level and second and third harmonic graphics.
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High performance/price rate: DT-820 portable NLJD comes with the world most cost-effective, cost-saving and excellent performance.
ISECUS DT-820 | Affordable Compact & Entry-Level NLJD
It is a compact, easy-to-use, and affordable professional handheld Nonlinear Junction Detector, delivering reliable performance for general security sweeps. The perfect entry-level choice, equivalent equipment to similar models from UK and Russian manufacturer.
Specifications:
| Parameter | Technical index |
| Product working frequency band | 2.4GHz |
| frequency range | 2.404 GHz - 2.472 GHz |
| Receiving 2nd~3rd Harmonic Range | 4.808 GHz-4.944 GHz, 7.212 GHz-7.416 GHz |
| Pulse mode transmit power (maximum) | 0~1W |
| Receiving sensitivity | Less than -125dBm |
| Receiving dynamic adjustable range | 50dB |
| Battery Working Time in Maximum Power Pulse Mode | 4.5H |
| Battery type | Replaceable lithium battery |
| Charging time | Fast charging 3H |
| Interactive interface | LCD Display Receiving Harmonic Signal Intensity |
| Audio prompts are supported and headphones can be connected. | |
| Supporting Vibration Tips | |
| Detection distance | >6M, C-class product complying with GA1236-2015 standard |
| Product size | 370mm(L)*96mm(W)*38.5mm(H) ±5mm |
| Protection Case Dimension | 355mm * 295mm *165mm ±10mm |
| Product weight | 0.6kg |
| working temperature | -20℃ to 55℃ |
| Working humidity | Less than 93%, no condensate |
| Product size | 365(L)*110(W)*65mm(H) |
| Outer box size | 580(L)*300(W)*150 mm(H) |
| Product weight | 0.6kg |
| working temperature | -20C ~45 C |
| Working humidity | No more than 85%, no condensate |
If you are looking for compact non linear junction detector with extendable pole, then DT-820Plus is recommended.
DT-820 NLJD, A Field-Proven TSCM Equipment for Professionals
Professional-Grade Tech
Delivering a level of performance and features typically found only in higher-priced professional models.
Trusted by EU Professionals
Selected as the core technology for specialized TSCM solutions in demanding European markets.
Verified Performance
Its reliability and effectiveness have been validated through extensive real-world field use and deployment.
ISECUS Portable NLJD DT-820 series is built upon a reliable technology platform that has been trusted and deployed by security professionals across the globe, including in highly demanding European markets. Its performance and reliability have been validated through extensive field use, often serving as the core technology for various specialized TSCM solutions. When you choose the DT-820 or DT-820Plus, you are not just acquiring a device, but also investing in a field-proven solution with a track record of success.
A Glance at DT-820 Non linear Junction Detector
DT-820 Non linear Junction Detector (TSCM Equipment)
Technology Introduction of Non linear Junction Detector
DT-820 Comparison with Similiar NLJD Model in the market
| Model | DT-820 | Lornet 24 | EDD-24T |
|---|---|---|---|
| Brand | iSecus | Lornet | JJN Digital |
| Country of Origin | China | Russia | United Kindom |
| Frequency | 2.404GHz – 2.472GHz | 2.406GHz – 2.414GHz | 2G-3G |
| Receiving Sensitivity | ≤-125dBm | ≤-110dBm | ≤-125dBm |
| Power Ouput | 1W (Max.) | 10W | 1W |
| Operating Time(Pulse) | ≥4 Hours | ≥3 Hours | 4.5 Hours |
| Alarm Alert | Screen Alert, Sound, Vibration | Screen Alert, Sound | Screen Alert, Sound |
| Working Environment | -20℃-50℃ | 5℃-40℃ | 0℃-50℃ |
Key Performance Advantages of the ISECUS DT-820 Compact NLJD
A closer look at the technical specifications reveals the core advantages that define the DT-820’s performance in the field.
- Enhanced Detection Sensitivity: Featuring a receiver sensitivity of ≤-125dBm, the DT-820 is engineered to locate weaker, deeper, or well-shielded electronic devices, ensuring a higher probability of detection during a security sweep.
- Versatile Alerting System: Operators are equipped with three distinct alert modes—Screen, Sound, and a discreet Vibration Alert. The vibration feature is essential for missions requiring stealth or for use in high-noise environments.
- Ergonomic & Foldable Design: The detector head features an adjustable, articulating angle and is fully foldable. This ergonomic design provides superior operator comfort during extended use and allows for easier access to difficult-to-scan areas, such as under tables.
- Wide Environmental Tolerance: Designed for reliability across diverse conditions, the DT-820 operates effectively within a broad temperature range of -20℃ to 50℃, providing dependable performance wherever the mission requires.
FAQs Related to DT-820 portable Nonlinear Junction Detector
Q: Is the DT-820 suitable for someone with no prior TSCM experience?
A: Absolutely. The DT-820 was designed with simplicity in mind. Its straightforward interface and clear alerting system make it the perfect starting point for professionals entering the TSCM field, or for users who need a reliable, easy-to-operate device.
Q: How “compact” is it really? Can it fit in a typical briefcase?
A: Yes. Its compact and foldable design allows it to be easily hanged on belt and transported in our standard briefcase, making it ideal for discreet travel and rapid deployment.
Q: What kind of threats can I realistically expect to find with this model?
A: The DT-820’s -125dBm sensitivity is highly effective for locating common electronic threats such as GPS trackers, audio bugs, and hidden cameras in standard environments like offices, homes.
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iSecus, professional supplier of High-end Nonlinear Junction Detectors from China
DT-820Plus Portable
* Working Frequency Range: 2.4GHz
* Receiving Harmonic Range: Auto
* Receiving Sensitivity: Less than -125dBm
* Pulse mode transmit power (MAX.): 1W
* Battery: Li Battery,working>4H
*Interactive Interface: LCD, Audio, Vibration
* Extendable Pole: 80-136cm
DT-810 Professional
* Working Frequency Range: 2.4GHz
* Receiving Harmonic Range: M & A
* Receiving Sensitivity: Less than -140dBm
* Pulse mode transmit power (MAX.): 4W
* Battery: Li Battery,working 6H
* Interactive Interface: LCD, Audio, Vibration
* Telescope Length: up to 145cm
DT-830 NLJD & Thermal
* Working Frequency Range: 2.4GHz
* Receiving Harmonic Range: M & A
* Receiving Sensitivity: Less than -140dBm
* Pulse mode transmit power (MAX.): 4W
* Battery: Li Battery, working 4H
* Interactive Interface: LCD, Audio, Vibration
* IR Resolution: 160 * 120px
* Thermal Image Sensitivity: < 50mK
DT-824S High Sensitivity Handheld NLJD with Advanced Analytics
