Petrutech Spy Shop
Professional Eavesdropping, Bugging and Surveillance Equipment

Set VOX93 voice activated transmitter and programmable receiver

$462.00  $421.00
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Set VOX93 - programmable listening device and the PETRU433 professional PLL transceiver for long distance and prolonged time


A very powerful set, which is programmed in our laboratory, consists a powerful voice activated spy bug transmitter and  a super sensitive receiver. By using this set, you can achieve long distances and at the same time, the transmitter's battery lasts for a long time.

The transmitter is voice activated. It means that it will transmit only when there are voices in the target room. This way, during silence, it will switch to "sleeping mode" and the current drawn from the battery is almost zero. The microphone is external, and it comes at the end of a thin cable. The microphone diameter is only 4mm (0.157") and the cable length is about 5cm (2").

The transmitter may be programmed in the UHF band (400-460 MHz), to almost endless frequencies, so you may use up to 15 different listening devices at the same time!

The receiver is inserted in a transceiver case. We used only the transceiver's case and the original transmitter. The receiver is built especially for us, using our specifications, in Europe. It is about three times more sensitive compared to other transceivers. This way, we could keep the price lower than many other sophisticated scanners.


The receiver:


  • Working Voltage: 3.7V Li-ion, 1500mAh. rechargeable.
  • Estimated working time between chargings: 10-12 hour.
  • Smart charger: Desktop charger AS GIFT ONLY US PLUG
  • Dimensions: 110 X 50 X 32 mm (without antenna)
  • Stability: 2.0ppm.
  • Frequency: True NFM (Narrow Band FM) or WFM (factory programmed).
  • Distance: Extreme Long receiving distance. Picks up transmissions through walls and ceilings.
  • Receiver's frequency range: Frequency range 400 - 450 MHz (PROGRAMMABLE).
  • Sensitivity: Better 0.55 µV into 50 Ohm (12 dB/sinad).
  • Deviation: 2.5 KHz to 6 KHz
  • Outlets for external audio recording or earphones.
  • Adjacent Channel Selectivity: ≥60dB
  • Gold plated PCB.
  • 15 pr4ogramable channels (in our lab)!
  • Audio:High quality 1000mW
  • Antenna: semi-flexible DETACHABLE antenna, 10 cm.
  • Adjustements: No adjustments are required.

The VOX listening device:

  • Working Voltage: 2 x3V (AA or AAA) or 1 X Lithium ( CR2450 to CR2477) or 1 X 9V.
  • External 4mm diameter on 5 cm thin cable microphone.
  • Board Dimension: The Diameter is only 2.4 cm (Less than 1.0")!
  • Transmitter's frequency range: NFM (UHF) 400 - 460 MHz CRYSTAL STABILIZED.
  • Long transmitting range:  up to 4000 m² on clear. (L.O.S). Special powerful design.
  • SMD built, for more stability and range (MIL SPECS 1% accuracy).
  • Frequency programmable (In our lab)
  • EXTRA amplified, buffered output!
  • NFM - The only one Varicap controlled for power and stability.
  • Using a patent pending material for encapsulating, for safety, security and anti - moisture!!!
  • The device is coated with special Anti-static material.
  • Penetrates through walls and ceilings.
  • Very easy, no time installation.
  • User manual is included.
  • USA made by Motorola high amplification FET microphone.



  • 1× Portable radio
  • 1× Inductively loaded antenna
  • 1× Li-ion battery pack
  • 1× Desktop charger
  • 1× Belt clip
  • 1× Handstrap
  • 1 x VOX93 bug spy, voice activate wireless microphone device



  • Model: SETVOX439
  • Shipping Weight: 0.12Kgs

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