DT-820Plus
Portable Non-linear Junction Detector to Detect Electronic Devices
General Configuration:
√ Working Frequency Range: 2.404GHz-2.472GHz
√ Receiving Harmonic Range: Auto
√ Receiving Sensitivity: Less than -125dBm
√ Battery: Li Battery,working>4H
√ Interactive Interface: LCD, Audio, Vibration
√ Detection Distance: GPS module @ 400-500mm; Mobile Phone @ 180-220mm; SIM Card @ 90-120mm
√ Extendable Pole: 80-136cm
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Description:
DT-820Plus is an upgraded model of DT-820 with over 1m telescopic rod. It is a professional portable non-linear junction detector at good quality and performance. DT-820Plus NLJD can detect electronic devices hidden in walls, floors, ceilings, lamps, furniture or containers, whether they are transmitting signals or switching on or off. Once there is alarm, operator will be alerted by display, sound and vibration. This is a top-level TSCM equipment. This nljd detector can be used to find target invisible equipment for protecting organizations and individuals Private information. DT-820Plus portable non-linear junction detector comes with an extendable pole for longer-distance inspection such as ceilling surveillance.
Technical Principles:
This portable 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 devices 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:
DT-820plus portable 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: Detecting hidden cameras and surveillance devices such as recording pens, cameras, etc. in residential buildings and hotels.
Features:
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High Positioning Accuracy: The NLJD uses 2400MHz(2.4G) radio frequency detection technology with high precision positioning characteristics.
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High Semiconductor Recognition Ability: The detector’s built-in spectrum analyzer supports second and third harmonic detection, can quickly and effectively identify devices containing semiconductors.
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High Sensitivity: Especially for SIM card devices with high sensitivity, to ensure that secrets, mobile communications equipment can be quickly detected.
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Low False Alarm Rate: Our 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 automatics transmission power and manual mode selection, easy to operate manually
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User-friendly Operation Interface: Supports OLED visual graphical interface, vivid display of power emission level and second and third harmonic graphics, easy to operate.
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High performance/price rate: DT-820Plus Portable Non-linear Junction Detector comes with the world most cost-effective, cost-saving and excellent performance. It can meet the general requirements for many projects.
No Blind Spots: The Telescopic Pole Advantage
DT-820Plus is perfectly designed with an additional lightweight telescopic pole that can be extendable from 80cm to 136cm. Without needing a ladder or other tools, you can effortlessly extend the NLJD into any hard-to-reach area such as inspecting ceilings, air vents, or high-mounted conduits. This ensures your security sweep has no blind spots.
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 |
| Extendable Pole | 80-136cm |
| 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 a top-quality portable non-linear junction detector, DT-820Plus NLJD is highly recommended. It is portable with light weight, already applied in many projects abroad.
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-820Plus Portable Non-linear Junction Detector
DT-820Plus Portable Non-linear Junction Detector User Guide
Unboxing of DT-820Plus Portable NLJD with Telescopic Pole
Technology Introduction of Non-linear Junction Detector (NLJD)
DT-820Plus Comarison with similar Portable NLJD
| Model | DT-820Plus | Star 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 |
| Rod Length | 80-136cm Extendable | 43-97cm Extendable | None |
| Equipment Weight | 0.5KG (Without Rod) | 1.0KG (Without Rod) | 0.7KG |
| Working Environment | -20℃-50℃ | 5℃-40℃ | 0℃-50℃ |
DT-820Plus Development Principle
This Non-linear Junction Detector was developped for high-end customers. Its configuration is high and performance has been proved to be satisfied by European market. The interface is user-friendly and the operation is simple.
DT-820Plus NLJD Packing List
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Non-linear Junction Detector
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Hand-held Telescopic Pole
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Headphone
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USB Connection Cable
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AC/DC Power Adaptor
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Harmonic test samples (2nd, 3rd)
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Protection Case
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More Non-linear Junction Detectors from iSecus
DT-820 Portable NLJD
* 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
DT-810 Professional NLJD
* 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 Professional NLJD
* 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
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