Petrutech Spy Shop
Professional Eavesdropping, Bugging and Surveillance Equipment

BUG Transmitter UHF VOX V8 Voice Activated Crystal Controlled

$144.00  $132.00
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In many cases, the monitoring of a suspicious room has to be effected over a long time period, however the room only can be entered just once, and the monitoring device has to be installed quickly and easily. Furthermore, this surveillance device can only be operated by batteries and should be activated only when there are persons in the room. Therefore, in order to save battery capacity, the VOX8 has been developed according to the latest technology standards (SMT), and it is automatically activated by reception of voices or sounds. Whenever there is no sound, the built in automatic voice control (Audio switch) will switch the transmitter into a stand-by mode. This will save the battery capacity and also will make the transmitter being undetectable when it is not in use.
The most important feature is the voice activation, i.e it transmits only when it hears voices. During quiet time, when nobody is at home or during sleeping time, it turns to stand-by mode, and it draws less than 1mA from the battery. It combines a sound activated switch and powerful UHF bug spy transmitter. The purpose of this arrangement is battery life conservation. This bug only turns on in response to a certain sound level (this trigger level is user adjustable).
The estimated distance is approx. 200m on urban area and up to 700m in open area (line of sight). Maximal drawn current during transmission: 30mA. Maximal output 14Bm. We use a extra sensitive internal miniature microphone, only 4 mm diameter. Requires an UHF receiver (we sell 3 UHF receivers) or an UHF scanner. One of the best listening devices on the market!  


  • Working Voltage: 9V Alkaline battery.
  • Case Dimension: only 4 X 3 cm !
  • ESTIMATED transmitting range: (Up to 700m - L.O.S., on clear area)
  • Audio Compression: Amplifies weak whispers, suppresses high noises !!!
  • Using SMD, for stability and dimension (MIL SPECS 1% accuracy).
  • 7 stages EXTRA amplified output!
  • NFM - Varicap controlled for power and stability.
  • Using a patent pending material for encapsulating, for safety and security !!!
  • Ground Plane design, less interferes with other devices.
  • The ONLY ONE that has a frequency range of: 418MHz or 433MHz Crystal Controlled for high stability and PRIVACY.
  • Tiny electret sensitive microphone  You won't miss a whisper. High amplification microphone.
  • The device will work up to 3 weeks connected to a 9V battery (alkaline), depending on the freshness and brand.*

*The calculation on VOX mode for up to 20 days is with a 9V alkaline battery and assuming 2 hours of conversations per day (the total of all the activity of the day).


  • 1 Crystal stabilized voice activated VOX8 PLL SPY BUG Transmitter.
  • 1 Instructions Manual.
  • Model: VOX8
  • Shipping Weight: 0.06Kgs

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