Height 36 mm
Width 83 mm
Weight 430 g
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Multifunctional searching device ST-031M is designed for the detection and localization of technical surveillance measures and to identify the natural channels of information leakage, as well as for quality control of data protection.

ST-031M allows us to perform such search tasks as discovery of the facts and determining the location of the radio-emitting devices, which creates a potentially dangerous information leakage radiation.

ST-031M can detect and localize the following Special Technical Means of Obtaining Secret Information (STMOSI):

· Radio microphones;

· Telephone transmitters;

· Radio-stethoscopes;

· Concealed video cameras equipped with a radio channel for transmission of information;

· Technical means or systems for spatial radio frequency radiation;

· Beacons of the systems used for moving objects monitoring (e.g. people, transportation means, goods etc.);

· Unauthorized radio stations, radio handsets, and also telephones with radio extension;

· Radio modems and digital wireless access systems.

Technical characteristics:

 Main unit
Channel 1. Selective HF detector
  Input impedance, Ohm 50 
  Operating frequency range, Mhz 140...4420 
  Bandwidth, Mhz 1-40
  Scanning speed, Ghz/s   40
  Irregularity of the frequency response, dB   ±5
  Minimally detectable signal in the automatic mode, dBm   ≤ -65
  Dynamic range, dB   50
  Demodulation modes   AM, wideband FM
Channel 2. Scanning receiver

Input impedance (symmetrical), Ohm 600
Operating frequency range, Mhz 0,05...140
Bandwidth, khz 40
Scanning speed, Mhz/s 35
Irregularity of the frequency response, dB ±5
Minimally detectable signal in the automatic mode, dBμV 25
Dynamic range (without attenuator), dB 65
Attenuation of built-in attenuator,dB 20
Demodulation mode AM, FM
Channel 3.Low-frequency amplifier
Input impedance, kOhm 100
Operating frequency range, Khz 0,025...100
Irregularity of the frequency response, dB ±1
Integral voltage level of noise, dBμV -109
Amplification ratio, dB 12, 24, 36, 48
Sound path
Frequency range, Hz 300...9000
Volume regulation range, dB -50...+20
Max power output in the output “PHONE”, mW 150
Type of display LCD-TFT 3,2”
Resolution 240x320
Colour quantity 65000
Power supply
Lithium-polymer battery with a voltage, V 3.7
Power consumption, W 1,2...2,5
Continuous operating time at max. power consumption, hours >7
Time to charge a fully discharged battery, hours 7
Weight, dimensions
Dimensions of the main unit (length, width, height), mm 175x83x36
Weight of the main unit, kg 0,430
Dimensions of the case (length, width, height), mm 390x310x170
Full weight of the set in case, kg 3,8

Height 36 mm
Width 83 mm
Weight 430 g

Delivery set:

1. Ultrahigh frequency  sensor (UWBD031M)
2. Conductive wire lines differential generator
3. Battery (for conductive wire lines differential generator)
4. Attenuator
5. Test sound emitting device
6. Connecting cable of sound emitting device
7. Induction converter (Magnetic field sensor)
8. Main controlling,  processing and displaying unit
9. "Crocodile" type clamps (2 pcs)
10. Multipurpose adapter for checking wire lines - BWLC031M.
11. Cable to connect BWLC031M adapter to telephone lines.
12. Multipurpose cable to connect BWLC031M  adapter to wire lines
13. High - frequency telescopic antenna
14. Cable to  connect BWLC031M adapter to electricity sockets for scanning receiver CH2
15. Flash drive with software
16. Cable to connect to a PC
17. Adapter to connect BWLC031M adapter to the multi-wire cables
18. Telephone adapters (2 pieces)
19. Cable connectors type RG45: 8х4; 8х6; 8х8
20. Headphones
21. Charger
22. Carrying case
23. User manual and warranty certificate

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
Catalogue file
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