Non-Linear Junction Detector (NLJD)

Non-Linear Junction Detector (NLJD)

The Non-Linear Junction Detector (NLJD) is a compact and powerful counter-surveillance tool designed to find hidden electronic devices, whether they are active or not. It operates in the 2.4GHz–2.5GHz range and uses a 2400MHz working band. With advanced nonlinear harmonic technology, it ensures high detection accuracy. Furthermore, it supports second and third harmonic analysis and offers sensitivity levels as low as ≤ -140dBm, making it ideal for detecting semiconductors hidden within walls, ceilings, or furniture.

For consistent performance, the device includes a built-in spectrometer that identifies electronics even when they are turned off. Its sensitivity helps locate small SIM-based devices with ease. In pulse mode at full power, it can run continuously for up to 6 hours. Additionally, the lithium battery recharges completely in just 2.5 hours. Operators benefit from vibration, sound, and display alerts, all housed in a rugged shell that holds up well in tactical conditions. With its ability to penetrate over 370mm through brick, the detector works reliably in demanding environments.

The Non-Linear Junction Detector (NLJD) sees use across military operations, law enforcement agencies, government departments, and corporate security units. It helps uncover unauthorized communication gear, listening devices, and covert electronics—even when those threats are powered off or not transmitting.

Tactical Supply Pakistan provides this high-performance detection system to support professionals in field operations. With reliable tools built for durability and real-time use, the brand continues to supply mission-critical technologies for surveillance countermeasures.

Can the device detect electronics behind thick barriers like walls?
Yes, it can detect electronic devices hidden behind brick walls up to 370mm thick, making it ideal for concealed threat identification.