EDD-24XT Professional NLJD Semiconductor Detector

The EDD-24XT is a high-performance, ultra-portable non linear junction detector (NLJD) engineered for professional counter surveillance teams and TSCM sweep specialists.

Unlike standard RF detectors that rely on an active radio frequency transmission, this specialist unit detects the physical presence of silicon-based semiconductor circuits found inside all modern electronics.

Whether you are searching for covert spy cameras, audio bugs, voice recorders, or unpowered micro NANO SIM cards, the EDD-24XT locates hidden threats whether they are switched on, on standby, or completely powered off.

Precision Semiconductor Detection via Dual Harmonic Analysis

By transmitting a focused 2.4 GHz signal and simultaneously analysing responses on the 4.8 GHz (Second Harmonic) and 7.2 GHz (Third Harmonic) frequencies, this **non linear junction detector** identifies the distinct electronic signature of silicon.

To streamline the sweep process, the EDD-24XT features an intelligent algorithm that distinguishes genuine electronic components from false positives.

Because real silicon semiconductors reflect a dominant second harmonic signal, while non-threatening materials like oxidized metals or bimetals emit a third harmonic response, the system’s probability indicator automatically displays a clear visual reading of ‘Silicon’ or ‘Metal’ on screen.

Ergonomic Design with Adjustable Telescopic Reach

Weighing under 900 grams, the EDD-24XT is one of the most portable units in its class, housed in a precision-machined aluminum enclosure.

It includes an adjustable aluminum extension pole that extends from 30 cm to 140 cm, paired with a 5-position tilting head to easily inspect ceiling voids, high light fixtures, and floor gaps.

To prevent operator fatigue during extended boardroom sweeps, two 200g counterweights screw directly into the base of the handle to perfectly balance the assembly when fully extended.

Tactical Audio Confirmation & Field-Ready Performance

The unit provides two distinct audio modes via its internal loudspeaker or supplied earphones for hands-free, eyes-free searching.

Tone Mode alters pitch based on harmonic signal strength, while Demodulation Mode allows operators to listen directly to the second harmonic receiver signal.

Powered by an internal lithium-polymer battery providing up to 4.5 hours of continuous operation, the complete kit is supplied in a military-standard protective case for rapid field deployment.

Explore our wider range of specialist bug detection systems for complete TSCM security protocols.

Provided you deploy your surveillance equipment for lawful purposes, the situations that suit using a voice recording device or physical semiconductor sweeper are extensive.

If you have technical questions regarding harmonic analysis or operational setup for your non linear junction detector, please feel free to contact our expert team today.

What is a non linear junction detector and how does it work?

A non linear junction detector (NLJD) is a specialist counter-surveillance tool used to locate hidden electronic components. It transmits a high-frequency 2.4 GHz signal that interacts with silicon semiconductor junctions present in all modern microchips. When the signal hits a semiconductor, it reflects harmonic frequencies back to the receiver, revealing the presence of hidden electronics even if the device is turned off.

Can the EDD-24XT non linear junction detector find bugs that are turned off or have no battery installed?

Yes. Because an NLJD detects the physical semiconductor properties of silicon microchips rather than an active radio signal, it detects covert cameras, voice recorders, and tracking devices whether they are powered on, on standby, or completely switched off.

How does the device distinguish between genuine electronic bugs and false positives like metal joints?

The EDD-24XT uses harmonic analysis. Genuine semiconductor electronics generate a strong 2nd Harmonic response, whereas non-threatening oxidised metals or rusty joints produce a strong 3rd Harmonic response. The device compares both signals and displays an automatic ‘Silicon’ or ‘Metal’ probability reading.

Can this non linear junction detector locate modern NANO SIM cards?

Yes. Despite their microscopic size, SIM cards contain silicon semiconductor layers. The high sensitivity of the EDD-24XT detects NANO SIM cards from up to 20 cm away, making it ideal for locating hidden GSM bugs or concealed mobile phones.

Why are counterweights included with the EDD-24XT kit?

When the aluminum pole is extended to its maximum 140 cm length, the antenna head can feel top-heavy. The two included 200g counterweights screw into the base of the handle to balance the unit, allowing operators to sweep ceiling voids without arm strain.

How long does the battery last during a sweep?

The internal lithium-polymer battery provides between 2 and 4.5 hours of continuous operation depending on the selected RF output power level, providing ample runtime for a standard TSCM sweep of a corporate boardroom.

Do I need formal training to use a non linear junction detector?

While the EDD-24XT features an intuitive display and visual probability indicators, operators should possess a foundational understanding of RF principles. Conducting practice sweeps in controlled environments is recommended prior to live client inspections.

• First time users should have a basic understanding of RF (Radio Frequency) principles. It is prudent to conduct some practice sessions in a controlled environment prior to use ‘in the field’.
• Engineered to locate physical semiconductor components; best utilised alongside standard radio frequency (RF) sweepers as part of a comprehensive TSCM toolkit.
• Operates on the 2.4 GHz ISM frequency band; operators should account for high ambient Wi-Fi or Bluetooth traffic in urban office environments during harmonic analysis.
• Operators must ensure they are authorised to transmit high-power RF signals (up to 4 Watts EIRP) within their specific operating jurisdiction.
• Provides up to 4.5 hours of continuous runtime per charge; keep the included USB charger or a power bank available for multi-room commercial sweeps.

• Engineered to identify semiconductor junctions in all modern electronics, regardless of whether they are active, in standby, or completely powered off.
• Simultaneously monitors the 2nd Harmonic (4.8 GHz) and 3rd Harmonic (7.2 GHz) to distinguish between genuine electronic components and “false” junctions like oxidised metals.
• Delivers a focused 2.4 GHz signal at up to 4 Watts, providing the sensitivity required to detect tiny components like NANO SIM cards from up to 20cm away.
• Automatically analyses received signals to provide a Silicon or Metal probability indicator, allowing for rapid threat assessment.
• Provides an audible pitch that changes in frequency based on the strength of the 2nd Harmonic signal, enabling easier analysis.
• Allows the operator to listen to the actual demodulated signal of the 2nd Harmonic receiver through the internal speaker or earphones.
• Features a high-contrast display for real-time signal analysis and probability readings.
• Integrated aluminium pole adjusts from 30cm to 140cm, allowing for the inspection of high ceilings or deep voids without additional ladders.
• The antenna head can be locked into five different positions over a 90-degree range.
• Supplied counterweights offset the weight of the antenna head when the pole is fully extended, reducing operator fatigue.

• Product Type: Professional Handheld Non Linear Junction Detector (NLJD)
• Transmitter Frequency: 2.400 GHz to 2.425 GHz (ISM Band Type B)
• Transmit Power Output: Up to +30 dBm (1 Watt); Radiated Antenna Power up to +36 dBm (4 Watts max)
• Harmonic Detection Channels:
  • 2nd Harmonic (4.8 GHz): Identifies Silicon / Semiconductor Junctions
  • 3rd Harmonic (7.2 GHz): Identifies Non-Threatening Oxidized Metals & Bimetallic Junctions
• Receiver Sensitivity: Better than -120 dBm on 2nd and 3rd Harmonics (Approx. 10 kHz Bandwidth)
• Visual Display: 3.5-Inch Colour TFT Daylight-Readable Display Screen
• Audio Output: Internal Loudspeaker or 3.5 mm Earphone Jack (Tone & Demodulation Modes)
• Telescopic Extension: Adjustable Aluminium Extension Pole (30 cm to 140 cm range)
• Power Source: 3.7V Internal Rechargeable Lithium Polymer Battery (Micro USB 5V Charging)
• Battery Endurance: 2.0 Hours (at max transmit power) up to 4.5 Hours (at min transmit power)
• Chassis Construction: Precision-Machined Aluminium Housing with Plastic Antenna Cover
• Dimensions & Weight: 450 mm × 110 mm × 47 mm (with pole) / Handheld Weight: 870 g (Main Unit + Pole)
• Full Kit Specification: Military Standard Heavy-Duty Carry Case (Total Kit Weight: 3.0 kg)

• EDD-24XT Non Linear Junction Detector Main Transceiver Unit
• Integrated Telescopic Aluminium Extension Pole (30 cm to 140 cm)
• 2 × Screw-In Handle Counterweights (200 g each)
• High-Quality Audio Earphones
• 5V USB Mains Charger & International Socket Adapters
• Micro USB Charging Cable
• Military Standard Heavy-Duty Protective Transit Case
• Operating Manual & TSCM Sweep Guide