Non-linear junction detector NEW! ST-402 “CAYMAN”

ST-402 Cayman is intended to detect and locate eavesdropping electronics, mobile phones and SIM cards or any other devices utilising semiconductor technology. It allows detecting electronic devices whether active or not, as well as inding their exact location. It also enables one to distinguish between return signals from real semiconductors and other kind of responses, such as those coming back from corrosion or metal-oxide-metal structures.


  • Search for active and passive electronic eavesdropping devices.
  • Detection of mobile phones and SIM cards.
  • Search for other electronic devices comprising semiconductor elements.
  • Checking parcels and mail for dangerous attachments containing semiconductors.

Competitive advantages

  • High detection sensitivity at a low output power.
  • Efective work against interference (reinforced structures, corrosion, etc.).
  • Low probability of false alarms.
  • Additional opportunities to identify the response provided by the analysis of signals in the “Audio”.
  • Ergonomic design and large telescopic bar provides maximum comfort for the perator.
  • Standard replacement battery provides up to 4 hours of continuous operation. ST-402 “Cayman“ comes with four batteries that can increase the uptime up to 8 hours.
  • Optimum balance between price and capabilities.


Range of radiated frequencies


Peak radiated power

less than 2W

Antenna system polarisation


Operation Modes:

Search, Audio, Аdaptation

Sensitivity diapason in manual mode

40dB (5 vales with 8dB increment)

Response indication

visual (Light), sound

Power Supply

Two Li-ion rechargeable batteries 3,7 V (type 18650)

Time of continuous work from fully charged battery

from 3 to 4 hours (depending on the operation mode)

Battery charging time

Less than 3 hours

Operating conditions

- working temperature range


- relative air humidity

up to 85% (at 25°С)

Weight (with batteries)

1.75 kg

Dimensions (lengthxwidthxweight)

-when folded


-with telescopic arm pulled out completely


Weight of full set in case

5.8 kg