Cayman 400 (402)


Height 250 mm
Width 1500 mm (telescopic arm and elbow rest pulled out completely)
Thickness 130 mm
Weight 1.75 kg (with battery)
Case Plastic
Power supply 12
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Non-linear junction detectors Cayman are used for search operations. ST-400 (402) CAYMAN is designed for search and detection of hidden data capturing devices, mobile phones, SIM-cards and other electronic devices containing semiconductor components. Cayman 400 (402) allows detecting and precise localizing both working devices and even turned off ones. Using this non-linear junction detector operator is able to distinguish natural semiconductor from the artificial one (metal, corrosion, metal-oxide-metal structure). 

Competitive advantages:

Main distinctive feature of non-linear junction detectors CAYMAN is multifrequency irradiation mode, which provides wide range of advantages in front of detectors designed by the classic scheme:


·         increased selectivity (ability to distinguish electronic components with background of metal-oxide-metal structure);

·         increased probability of detection electronic devices behind partially shielded surfaces (such as the grid "netting");

·         optimal ratio of radiation power and detection range;

·         ability to identify detected objects in Audio mode;

·         high detection sensitivity at a low output power;

·         ability for effective operation in complicated interference environment (reinforced structures, corrosion, etc.).



Updated model has beneficial differences from the last modification:

·         modernized antenna, which increase detector selectivity;  

·         reduced weight and overall dimensions of the device;

·         simplified system of control and indication;

·         use of common power supply batteries;

·         more ergonomic design: large telescopic bar and retractable armrest provide maximum comfort for the user.



Additional features:

·         original signal processing algorithm enables to reduce false responses  and increase the selectivity as well as reaction speed;

·         software upgrade via USB;

·         detector is supplied in shockproof package.

Cayman 400 Technical Characteristics: 

Frequency range

2-3 GHz

The maximum radiated peak power

Less than 2W


circularly polarized

Operating modes

“search”, “audio”, “adaptation”

The range of sensitivity adjustment in manual mode

40 dB (5 steps of 8 dB each)


- visual

three 16 LEDs bars

- audible

built-in speaker, headphones

Power supply

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

Run time of a fully charged battery

3-4 hours (depending on the operating mode)

Charge time

not more than 3 hours

Operating conditions

- temperature

+5 ... +40 C

- humidity

not more than 85%

weight with battery

1.75 kg

Dimentions when folded 
(lenght, width, height)

510x130x145 mm

Dimentions with a fully extended telescopic handle and armrest

1500x130x250 mm

Weight of the full set

5.8 kg

Height 250 mm
Width 1500 mm (telescopic arm and elbow rest pulled out completely)
Thickness 130 mm
Weight 1.75 kg (with battery)
Case Plastic
Power supply 12
Frequency band 2-3 GHz
Battery life 3-4 hours
Battery charging time up to 3 hours

Delivery set:



No. in Figure

ST 400 CAYMAN non-linear junction detector



Rechargeable battery of type 18650



Power supply charger



Charging unit*






Semiconductor simulator (red marking)



Metal-oxide-metal structure simulator (blue marking)



Operation manual


Transportation shockproof package


*charger and headphones are located at the bottom of the stacking (under nonlinear locator)


Please note: software upgrade can cause recorder’s breakdown. This is not a warranty case. All the new recorders have the latest software version and there is no necessity to upgrade software after buying the recorder. Don’t take the risk. In case there are problems with audio recorder operation please apply to our technical support specialist:

Software Firmware Manual to
Series manual Supplement to the model
ST 400 (402) Cayman Operating Manual Catalogue file Cayman
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