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Ultrasound Deterrents for Personal, Home and Property Protection

This page describes some very unique items generally categorized as "ultrasound"

The ultrasonic receiver is a device that can detect sound waves that are normally beyond the range of human hearing, and then translate this signal to audible frequencies. The ultrasonic generators are devices that create ultrasonic sound waves, which can be used in some novel ways such as a safety deterrent or conditioning device.

Ultrasonic Receiver
Advanced Electronic Circuitry lets you hear only Ultrasounds and Reject Normal Sounds. Determine what and where it is coming from!

Click HERE for actual bat sounds recorded using the HT90

HT90 Instructions

Included headsets may differ from those shown in picture.

This unique item is a directional ultrasonic heterodyning type listening device. Listen to the amazing world of high-frequency sounds. It has many uses, both in the scientific field especially entomology to study insects, bats, other animals and fauna. Leaking air, water, gas, steam, pipes, and machinery wear are only a few of the many faults easily made detectable, potentially preventing more serious events from occurring. It can serve as a detection device allowing one to hear animals or people walking in the woods on dry ground, or even on a wet day. A crumpling plastic bag, moving coins, a key chain, rain drops, etc. This unit opens a whole new world allowing you to listen to sounds you didn't think even existed! Its directional reception allows for the detection and general location of ultrasound that may be used as harassment.

Hear The Astounding and Incredible World Of High Frequency Sounds - Beyond Frequencies Detectable By The Human Ear!

Battery operated directional device detects sounds beyond the range of human hearing, with narrow band tuning from about 23 to 27 kHz (-3db points), allowing you to hear and pinpoint mechanical, electrical and biological sounds such as leaking gases, air, water; corona leakage; motor frictional sounds potentially including bearing wear breakdown noises; bats, insects, and other sounds of mother nature; a hunter's aid for high frequency sounds made by animals traveling through dry woods or even wet grass -- even beading water! There are countless applications for this unit.

The 12" aluminum parabolic dish increases the amount and sensitivity of collected sound (increases the reception of fainter sounds, or those from a longer distance), and provides more of a directional target location.

Pinpoint Those Annoying Sounds Coming From Bark Controllers, Animal Repellers, and Those Who Might be Purposely Using Ultrasounds Against You for Harassment

Front panel controls:
  • 3.5 mm phono jack for audio output into headsets or recorder or both
  • On/off and volume control
  • Narrow band tuning dial from 23 to 27 kHz (-3db points)
  • Uses eight AA batteries installed in handle (not included)
  • Includes cushioned quality headsets (may differ from photo) 
  • One-time users may want to take advantage of our rental option

* This device is not made to hear normal audible sounds. See our Surveillance category for listening devices that will amplify "normal" sounds that the human ear can normally perceive.
- Assembled and ready-to-use Ultrasonic Receiver with Headsets, Dish, & Microphone Mount and included Rental option ... $299.95
- Paper Plans ... $10.00
- Downloadable Plans ... $4.00


Ultrasound Pain Field Guns and Sonic Shock Wave Generators
Can discourage and intimidate intruders, drive out animal pests, and train dogs to stop barking.

These ultrasound pain field guns and generators can be tuned to target certain animals and unwanted human intruders. The effect does not cause injury but produces a debilitating highly discomforting feeling of nausea, disorientation and paranoia.

There are many home and personal alarms available, but none have a deterrent that can prevent or discourage an encounter quite like ultrasound. You will find on this page devices that can be tied in with alarm systems to provide a PAIN FIELD that can produce very uncomfortable to painful effects. These can range from debilitating and incapacitating, to enervating fear and threatening, to sickening nausea and nerve racking paranoia…all without physical contact! Effects can vary to an extent with number of units used, installation, distances, target sensitivity, and other variables.

A major part of this technology was developed in our labs for the Israeli military and now is used by other militaries (including the US and Israel) and peace-keepers as a deterrent to discourage and break up unruly crowd gatherings and potential riots. See our downloads for more available data and other more effective deterrents.

Levels of Security Deterrents & Their Methods

The potential user should download and read this material to understand the objective of these systems, and to note other more effective options.

Sonic Nausea Device
Great for ridding unwanted visitors, inside or out. Discreetly discourage unwanted gatherings, with radio control option allowing operation from up to 300’ away.



Easily-hidden circuit produces a very annoying sonic wave that people feel, yet most do not hear, and eventually over a short period of time cannot tolerate! Acoustic wave shape makes the source hard to locate.

Optional radio control allows remote operation from up to 300’ away. Allows the user to have a lot of fun playing jokes on people, or provides a very useful tool against unwanted intrusions and unwanted congestions of people.

The NAUSEA10RC is the radio controllable version, which can be operated at distances out to 300 feet. This allows the user to have a lot of fun playing jokes on people, or provides a very useful tool against unwanted intrusions and unwanted congestions of people. The NAUSEA10RC includes a 12V wall adapter that runs on 110 or 220VAC input, allowing it to run on wall power 24/7, or can be powered internally by 8AA batteries (batteries not included) for remote operation in areas without wall power.


   • Outside Range of effect is most effective up to 25 ft on most people -- it will work beyond this range, but to a reduced effect with distance. Inside a room may be more effective depending on objects that will absorb the output rather than reflect it.
   • Open assembly easily enclosed by user and camouflaged.
   • Available as a DOC TESLA ACTION science project kit.
   • Operating from a 9 volt battery allows a smaller enclosure, making it easier to hide but only lasting up to 6 hours.
   • Tunable from 8-25 kHz for providing different effects. (Experiment for best results.)
   • NAUSEA10 dimensions are 1.5" deep x 2" diameter (2.75" across mounting brackets).
   • A similar design is being used in the UK for discouraging younger people from congesting near unwanted sensitive areas.
   • The RC version (NAUSEA10RC) can also uses 8 AA batteries for greater output and longer running time, but requires the larger enclosure. This version also includes a 115VAC /12VDC wall adapter for continuous operation from a wall outlet. The RC can provide control from up to 300ft distance.
   • These systems include full color instructions and full descriptions of all functional controls and features with installation suggestions.

- Sonic Nausea Device, Assembled (with remote control & wall adapter) ... $98.95
- Sonic Nausea Device, Assembled (without remote or wall adapter) ... $65.95
- Sonic Nausea Device, Kit & Plans ... $44.95
- Paper Plans ... $10.00
- Downloadable Plans ... $4.00
- Optional 12VDC 2Amp Fully Regulated Wall Adapter (to run the NAUESA10 on wall power 24/7) ... $9.95

Invisible Pain Field Generator
Shirt pocket-sized, spooks dogs and other animals, even reported to scare bears away and people too!

Our PAIN FIELD devices are generally very effective for their intended purpose, but living things sometimes may react differently to this type of stimulus when used for Animal Control.

Miniature electronic device intended for potential vicious dog and animal protection. May discourage human encounters. Also used for field research work. Complex sonic shock waves are internally adjustable for maximizing on target subject. Operating frequency is 18-19kHz (right at the edge of human hearing). Sweep mode intensifies effect. Effective range of up to 25 feet.

IPG9 Instructions

  • high sound pressure level
  • directional pain field sonic waves
  • 4" x 3" x 2" Shirt pocket sized
  • Operates on a 9 volt battery
- Assembled and Ready to Use ... $114.95
- Kit & Plans ... $81.95
- Paper Plans ... $10.00
- Downloadable Plans ... $4.00

ALL NEW 2nd GEN Long Range Ultrasound Pain Field Guns with Higher Power Output
These units use special issue transducers and tuned resonating tubes and are classified as a second level of effectiveness


PPP10 Instructions

Information Unlimited now offers our SECOND GENERATION extended range ultrasonic pain field guns. This product is an improvement of our PPP10 with unique advantages. We now offer the product with an ultrasound focusing lens. This feature greatly intensifies the effect at far field and projects a narrower beam that confines the effect into a smaller area. Our test documentation shows that when the focusing tube is adjusted to the frequency just above human hearing that the sound pressure increases many db. These new improvements more than triple the range. The effect is also noticed on frequencies above and below human hearing providing a significant gain over a wide window of frequencies The transducer used now is a special issue unit that has considerably more sound pressure level than the standard unit.

  • Very high SPL and Directional Pain Field Sonic Shock Waves
  • May be set to an inaudible but intolerable feeling of pain or discomfort
  • 3-1/2"x 6" Barrel Houses Transducers And Electronics
  • Butt Section Houses 8 AA Batteries
  • Sweep and Frequency Controls adjust for maximum effect on target
  • PPP10 dims: 9"L x 3.5"W x 10"H
  • PSP60 dims: 8"L x 7"W x 11"H (front plate about 7"x5"x1.25")
  • The PSP60 is an enhanced PPP10 design with nearly 3 times the output power, and also has a jack to plug in an adapter for running on wall power (includes 12DC/2AR wall adapter).


PSP60 Instructions

These handheld Ultrasound guns have many uses. They are portable and can flush out rats and other vermin in areas as silage bins, chicken coops, around dumpsters, etc. They can be used as a survey tool for research with animals on the effect of this pain field, and serve to determine whether the user may want a more permanent installation and system to help control his problem. They can also be quite effective on people. Check local laws before exposing to people.

ALL NEW Long Range Ultrasound Pain Field Guns with High Power Output

They are classified as a second level of effectiveness

- High-Power version ... $144.95
  The PPP10-HP uses a focusing tube and a high-quality Special Issue transducer with excellent output.
- High-Power version Kit & Plans ... $109.95
- Paper Plans ... $10.00
- Downloadable Plans ... $5.00
- Very High Sound Pressure Level, Fully Assembled, with 12V 2A wall adapter (includes Rental option) ... $409.95
- Paper Plans ... $10.00
- Downloadable Plans ... $5.00

Generation 2 Ultrasound Pain Field Generator with Radio Control, Special Issue Transducers and Focus Tubes for Long Range Concentrated Effect
These high powered ultrasonic pain field generators are designed as directional sources of concentrated effect. They are intended for protecting areas such as gun rooms, garages or wherever a concentrated effect is necessary. Law enforcement installs multiple units on the roof of vehicles discouraging gathering of potential and unruly problem personal. These units are excellent for control of unruly barking dogs and other unwanted animal pestsEasily connects to other intrusion detectors, video systems, and home security systems for providing a deterrent that will not cause injury.
with Focus Tubes
PPF40 Instructions

These devices, licensed under a different trade name, are used in the UK to break up groups of unruly people and prison riots

Produces a pain field of time variant ultrasound shock wave energy. Dual-bank controls allow full adjustability of 2 independent channels across frequency, pattern, and sweep range, allowing for extremely effective outputs to be "dialed in" for best effect. Outputs can also be synchronized to match. Fully adjustable frequency range from 10kHz to 25kHz, producing extremely high sound pressure levels. Can be mounted to vehicles for potential crowd control applications. Easily moved lightweight and self-contained for portable operation in the woods, etc. Excellent for keeping out two and four legged pests from gardens, unauthorized areas, etc.

Also excellent deterrent to intruders when used in the home. The small, lightweight, highly-portable remote-controlled key fob transmitter is easily carried at all times, allowing immediate activation of the Phasor Pain Field Generator from anywhere in the home to disorient intruders. This will buy you time to obtain a more effective weapon, which are usually too bulky to be carried at all times.

Hearing protection recommended when setting up these units.

with Focus Tubes

PCC30 Instructions

These units are deterrents. They can be used with detection systems that will detect an intrusion of a person or an animal or any other threat. We have selected a sound pressure level and a strength that we feel is safe to use and liability-free. This means you can use it feeling comfortable it will have a deterring effect on the intrusion and yet at the same time will not cause injury to the intruder where you could be liable. You might want to check your local laws, as some states unfortunately favor the rights of the perpetrator far more than the homeowner or law-abiding citizen. Even though these products will not cause injury, they could create a situation in a highly politically correct atmosphere, so it is always good to know your local environment. We can only warn you of this, and it has not yet happened (knock on wood).

  • Can interface with other intrusion detectors, video systems, home security systems, etc.
  • Extremely High SPL Matrix Output
  • Dual-band control (PCC30)
  • Maximum effect occurs when set for inaudible feeling of intense pain
  • Frequency adjustable from 10kHz to 25kHz
  • Intensity can range from "alarm" to an intense pain field effect
  • Adjustable Sweep rate greatly enhances effectiveness
  • 12VDC internal batteries (8 "D" cells) or external 12VDC rechargeable batteries will operate for hours (batteries not included)
  • 12VDC Wall Adapter (Included) for 115VAC operation
  • Accessible controls
  • Built-in long range radio control with key chain transmitter for activation
  • Remote Jack for external triggering by intrusion detectors/sensors or remote alarm switches
  • PPF40 Size: 8" x 8" x 5"
  • PCC30 Size: 16" x 8" x 5"
The Remote Control (RC) allows operation from over 300 feet away, where for example this device could be concealed in an area you want to rid of animal and/or human intruders, and then activated unobtrusively and undetected from a distance when you notice congregation in the area. Or home intrusion can be prevented from anywhere in the house by remotely turning on this system to discourage or deter a situation. The receiver draws power from the system, so separate batteries are not required. The keychain transmitter operates like an automobile remote starter and will last for thousands of start/stop cycles with its replaceable battery. The small size of the transmitter allows it to be easily carried with you at all times, so you are always ready. Instructions included. remote control


PPF40 (4 Transducers)
- 2nd Generation, (4) Transducers, RC ... $439.95
2nd Generation with Focus Tubes for increased range and (4) Special Issue Transducers. Ready to use with Remote Control (includes Rental option).
- Kit Version, with Plans & All Components ... $329.95
- Paper Plans ... $15.00
- Downloadable Plans ... $7.00
PCC30 (8 Transducers)
- 2nd Generation, (8) Transducers, RC ... $599.95
2nd Generation with Focus Tubes for increased range and (8) Special Issue Transducers. Ready to use with Remote Control (includes Rental option). 

Generation 2 Ultrasound Pain Field Generator System with Remote Control for Home Protection with Special Issue High Powered Transducers
Produces a feeling of intense pain and disorientation. Excellent for Home and Property Protection; can be activated with the included wireless key chain transmitter, or automatically when connected to your security system or other detection methods.

capacitor capacitor

PPG300 Instructions

The Ultrasound Pain Field is a low-liability system capable of protecting your home, family, and personal property. Gives you precious time to prepare with more active force if necessary.

  • Easy to install with basic tools. Uses included low voltage wiring and universal mounting brackets
  • This powerful sonic deterrent can be triggered by multiple sensors, or integrated with an existing home security system (see our Radio Control and System Interfacing for information on remote control and examples of available addons like panic alarms, shockers, and other deterrents that can be interfaced to this system).
  • System may be activated manually at the control panel, by radio control, or triggered automatically through any of the three (3) inputs for intrusion detection sensors
  • Uses four (4) high output Military-issue Directional Ultrasonic Polarized Piezo Transducers
  • Covers four multiple areas up to 5000 sq ft, or concentrated on specific target areas & rooms (such as gun rooms, safes, etc.); coverage may differ depending on layout and absorbent material in the protected area
  • Runs from a 12V battery (not included) or included wall adapter for normal 115VAC home power
  • Control console is 3 x 4 x 6” and contains all controls and connection jacks to other systems, power, and transducers
  • Alarm may be activated or Reset remotely by radio control, or on the device by Manual Switch

Full Feature List

The Ultrasound Pain Field Generator is a low-liability system capable of protecting your home, family, and personal property.

Note: there are circumstances where a physical force back up may be justified and is highly recommended in certain situations if all else fails.

- Assembled, with Remote Control ... $439.95
- Kit, with Remote Control... $329.95
- Paper Plans ... $15.00
- Downloadable Plans ... $7.00
  pain wave

The Above System for the Auto

Generation 2 Ultrasound Pain Field Generator System with Remote Control for Automobile Protection with Special Issue High Powered Transducers

Similar version of the PPG30, but for automobile protection (2 transducers & no wall adapter). Produces intense pain to potential thief. Easily interfaces with your existing anti-theft alarm. No one will want to take your car for a spin with this "thing" going off!

  • Easy to Install in Vehicle
  • Uses its own Batteries or Vehicle Power
  • Small, Easily Concealable Package
  • Low Liability
- Ready to Install, with Remote Control ... $384.95
- Kit/Plans, with Remote Control ... $274.95
- Paper Plans ... $15.00
- Downloadable Plans ... $7.00

Ultrasonic Blaster For Scientific Research

Sonic Shockwaves Blow Holes In Metals!

  • 1/2 Quart Container
  • 40 KHZ 50 Watt Transducer
  • High/Low Power Switch
  • 115 VAC Operation
  • 6"x 5"x1-1/2" Base
  • Load Adjusting Circuitry
  • Use to Clean PC Boards
  • Jewelry, Coins, Small Parts

Produce "Cold Steam", Atomize Liquids, Clean Objects!

- Kit & Plans ... $149.95
- Paper Plans ... $15.00
- Downloadable Plans ... $7.00

Ultrasonic Generator

Cavitates water without contact

Acoustical 25 KHZ @ SPL of 130dB will atomize small amounts of water! May be focused by positioning to our "PAREF" Parabolic Reflector for experimentation. Tunable over a limited range. Wall-power operated (115VAC) two-part device with 1" resonant transducer.
- Assembled & Ready to Use ... $99.95
- Kit & Plans ... $79.95
- Paper Plans ... $10.00
- Downloadable Plans ... $4.00

Ultrasonic Oscillator

High Power 125 Watt Circuit For Cleaning Welding, Soldering And Cutting

- Paper Plans ... $10.00
- Downloadable Plans ... $5.00