Professional Tool for Detecting Concealed Electronic Devices.
The NLJD 3HECA-01 is a high-performance non-linear junction detector designed for professionals who require fast and accurate detection of hidden electronic components. Compact, cost-effective, and easy to operate, it offers a reliable solution for identifying threats such as SIM cards, covert audio recorders, and hidden surveillance cameras.

Detection of Passive Devices

• Capable of identifying electronic components even when they are powered off or disconnected from a power source;

Effective Detection Range

• Detects SIM cards at a distance of 80–110 mm and other electronic devices (such as mobile phones or voice recorders) at 170–270 mm;

Circularly Polarized Antenna

• Minimizes the risk of missed detections due to improper antenna orientation;

Safe Frequency and Low Output Power

• Operates in the 2.4 GHz ISM frequency band with an EIRP of less than 500 mW, compliant with EN 300 440 standards;

High Sensitivity and User-Friendly Interface

• Offers precise signal detection combined with an intuitive interface, ensuring rapid results without the need for specialized training;

Mobility and Continuous Operation

• Equipped with a 1.4-inch telescopic handle for ergonomic use, and the swappable battery system ensures uninterrupted operation in the field;

Operating Principle

• The NLJD 3HECA-01 transmits a radio frequency (RF) signal into the target area. When this signal encounters a non-linear junction—typically found in semiconductors—it generates harmonic signals. These are then detected and analyzed by the device, allowing identification of concealed electronic devices. This advanced method enables the detection of threats even when they are turned off or not transmitting, making it highly effective against covert surveillance equipment;

Advantages Over Traditional Detectors

• Unlike conventional RF detectors that rely solely on active transmissions, the NLJD 3HECA-01 is capable of locating both active and inactive electronic devices—including those that are powered off or disconnected. This makes it an invaluable asset during professional security inspections where discovering all forms of hidden electronics is critical;

Properties

• SIM Card Detection Range: 80–110 mm;
• Mobile Phone Detection Range: 170–270 mm;
• Transmitting Power (EIRP): < 500 mW (2.4 GHz ISM band);
• Harmonic Sensitivity (2nd and 3rd): -135 dBm;
• Antenna Type: Helical, Circular Polarization;
• Alarm Type: Visual and Audible;
• Power Supply: 2 rechargeable Li-ion or LiFePO4 batteries (AA size, 14500 type);
• Charging Method: Integrated/internal charging;
• Power Consumption: < 300 mA;
• Continuous Operation Time: ≥ 2 hours;
• Operating Temperature Range: +5°C to +40°C;
• Storage/Transport Temperature Range: -10°C to +50°C;
• Device Dimensions: 150 × 150 × 80 mm;
• Device Weight: 400 g.;

Set of equipment

• NLJD 3HECA-01 Professional Detector;
• Rechargeable Battery Pack;
• Battery Charger;
• Telescopic Handle;

Warranty: 12 months;

Delivery across Lithuania within 5–7 business days.