Petrutech Spy Shop
Professional Eavesdropping, Bugging and Surveillance Equipment

SET UHF 110 or 220v operated room transmitter and receiver


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This is THE best set of the professional AC Mains operated (110V - 220V) transmitter-receiver on the UHF band. It can cover an incredible large area, and due to its special design is the most stable and powerful you may find. The Mains AC 110V - 220V NFM SET is made of high quality Japanese and U.S components and supplied with a super sensitive RF stage.

****** Do you like to change batteries and pay for them? No, for sure, it's just a wasting money. This professional transmitter doesn't use any battery. It is connected directly to the AC Mains electricity 110V - 220V . A special audio filter make it more sensitive than ever to human voices.

The Miniature UHF transmitter is designed for use in a property or business place indoor or outdoor. This AC transmitter will transmit conversations to a distant receiver.
It has an exceptional audio quality.
The set is designed and produced based on the high knowledge of our high skilled staff, and using only on modern technologies. Each transmitter and receiver is tested and tuned in our specialized laboratory and tested "on field" by high skilled engineers for maximum distance.
The size of the mini transmitter is so small, that it allows the customer to conceal it imperceptible in any secret place.
The sensitive RECEIVER is adjusted to MHz, stabilized by Quartz, fixed frequency.
We are adjusting each set to a 100% matching frequency. One of the unique receiver features - listening to the conversation and recording at the same time, if it is connected to a recorder.
The estimated distance is from 200m in urban areas and up to 400+ meters on line of sight.


  • Power supply: 9V alkaline battery (not included)
  • Dimension: ONLY 2 X 5.5 X 8.7 cm !!!.
  • Frequency: 433.8-433.9MHz
  • This is an ORIGINAL crystal controlled NFM PLL UHF receiver.
  • Double Superheterodyne - PLL
  • Sensitivity: Better than –125 dBm into 50 Ohm (12 dB/sinad).
  • Less current drawing than any similar device - due to SMD components. (MIL SPECS 1% accuracy)
  • External antenna, only 10cm.
  • Built by using SMD components, for more stability and sensitivity
  • Sensitivity: Better than –125 dBm into 50 Ohm (12 dB/sinad)!
  • Deviation: ~ 2.5 KHz to 6 KHz !!!
  • Sockets for audio recording and earphones.
  • External DC socket.
  • PROFESSIONAL PLATED BOARD FOR EXTRA STABILITY. There is NOT oxidation and dry soldered joints during the time due to the coating material.
  • Just connect it to the battery, and start listening.


  • Working Voltage: 110 or 220V AC without battery!
  • Dimension: ONLY 1.4 X 2.3cm !
  • Microphone: External microphone, Omniderectional by Motorola, diameter 4 mm connected to a 5ck cable
  • Transmitter's frequency range: NFM (UHF) 433.6-433.9MHz FIXED MAINTENANCE FREE CRYSTAL.
  • Estimated transmitting range: Urban area - 200 mt. Line of sight: 600 mt.
  • Using SMD components, for more stability and miniaturization (MIL SPECS 1% accuracy).
  • Additional amplified output!
  • Using a special material for encapsulating, for safety and anti humidity !!!
  • Coated with special Anti-static material.
  • The transmissions on the UHF band penetrate through walls and ceilings.
  • Very easy installation.
  • User manual is included.
  • the miniature electret (Condensed) microphone is so sensitive, that you will hear a whisper from about 30sq.ft (100sq.m) radius , crystal clear.
  • High-tech laminate makes it weather resistant, and THE ONLY ONE which is coated with ANTI - FIRE INFLAMMABLE MATERIAL!!!


  • 1 Set stabilized receiver and UHF mains AC 110 or 220V transmitter.
  • 1 Instructions Manual.
  • 1 Gift
  • Model: SETM
  • Shipping Weight: 0.06Kgs

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