The Richmar US Pro 2000 2nd Edition, model DU3035, is a compact prescription therapeutic ultrasound device designed to deliver 1 MHz ultrasound through a handheld treatment head. It offers three duty-cycle settings, 5-, 10-, and 15-minute treatment selections, automatic coupling detection, and a pre-treatment sound-head warming feature.
The device is available as part of our portable hand-held ultrasound kit. You can find related professional systems and accessories in our ultrasound therapy and deep oscillation collection.
Prescription-device notice: Use the US Pro 2000 only according to the current manufacturer instructions and the treatment plan provided by a physician or other licensed practitioner. This guide does not establish a diagnosis or prescribe ultrasound settings.
US Pro 2000 quick specifications
| Specification | US Pro 2000 DU3035 |
|---|---|
| Ultrasound frequency | 1.0 MHz ±10% |
| Pulse repetition rate | 100 Hz ±10% |
| Available duty cycles | 5%, 50% and 100% |
| Effective intensity | Low: 0.08 W/cm²; Medium: 0.80 W/cm²; High: 1.60 W/cm² |
| Total output power | Low: 0.32 W; Medium: 3.20 W; High: 6.40 W |
| Maximum effective intensity | 1.60 W/cm² ±20% |
| Effective radiating area | 4.0 cm² ±20% |
| Maximum beam nonuniformity ratio | 5.0 |
| Beam type | Collimated |
| Treatment times | 5, 10, or 15 minutes |
| Preheat time | Up to approximately 3 minutes |
| Maximum listed preheat temperature | 35°C ±5°C |
| Treatment-head material | Aluminum alloy |
| Water protection | IPX7 for the treatment head only |
| Dimensions | 202 × 49 × 70 mm |
| Weight | Approximately 193 g without adapter |
| Power source | AC/DC adapter; no battery |
| Adapter input | 100–240 VAC, 50/60 Hz |
| Adapter output | 15 VDC, maximum 1.2 A |
| Warranty listed in manual | One year |
The current manufacturer sell sheet confirms the DU3035 kit includes the device, 2-ounce ultrasound gel, AC/DC adapter, hard carrying case, quick-start guide, and instruction manual.
What is therapeutic ultrasound?
Therapeutic ultrasound uses high-frequency mechanical sound waves rather than electrical stimulation. The treatment head transfers ultrasound energy through a coupling medium and into the targeted tissue.
The manufacturer describes the US Pro 2000 as producing deep ultrasound energy and lists pain relief and reduction of muscle spasms among its intended therapeutic applications. The prescribing practitioner must determine treatment suitability, treatment location, duty cycle, and duration.
Why should unexplained pain be evaluated before using ultrasound?
Pain can serve as a warning that tissue injury, disease, or another underlying problem is present. Treating discomfort without first identifying its cause could delay appropriate care. New, worsening, severe or unexplained pain should therefore be evaluated before therapeutic ultrasound is used.
US Pro 2000 controls
| Control or component | Function |
|---|---|
| Time indicator lights | Show the selected 5-, 10-, or 15-minute treatment time |
| Time button | Selects treatment time and begins treatment |
| Power indicator | Shows that the device is receiving power |
| Intensity indicators | Identify Low, medium, or High output |
| Mode button | Selects the 5%, 50% or 100% duty cycle |
| Power switch | Physically turns the device on or off |
| Ultrasound head | Transfers ultrasound energy through coupling gel |
| Adapter connection | Connects the original AC/DC adapter to the device |
The device does not use replaceable or rechargeable batteries. It must be connected to its specified AC/DC adapter during operation.
How to set up and use the US Pro 2000
1. Review the prescription and treatment location
Confirm the treatment area, setting, and treatment time with the prescribing practitioner. Do not independently increase the output or move treatment to a different anatomical region.
2. Inspect the device
Before every session, inspect:
- The metal treatment surface
- The treatment-head housing
- The cable and strain-relief areas
- The adapter and power cord
- The connector at the bottom of the device
Do not use the device if the applicator has cracks, exposed wiring, a damaged connector, or evidence that liquid has entered the housing.
3. Connect the original adapter
Insert the adapter’s DC connector securely into the receptacle on the US Pro 2000. Then plug the adapter into a suitable wall outlet.
Use only the adapter supplied or specifically approved for this device. The manual warns against altering the adapter or adding converters intended to adapt it for other electrical systems.
4. Prepare the skin
Wash or wipe the treatment area so it is free of dirt, oil, lotion, and other material that could interfere with contact.
Do not apply the device over broken, infected, irritated, recently operated on, or sunburned skin.
5. Apply ultrasound coupling gel
Place a generous, even layer of ultrasound transmission gel over the treatment area. The gel removes air gaps between the applicator and skin so ultrasound energy can be transmitted properly.
Balego’s conductive gels and ultrasound contact media collection explain the difference between ultrasound coupling media and products intended primarily for electrical stimulation. Use a gel labeled for ultrasound rather than substituting an ordinary lotion or electrode adhesive.
The manual recommends treating an area approximately twice the diameter of the sound head.
6. Turn on the device
Slide the power switch upward toward ON. The power light will illuminate, and the device will normally enter its sound-head preheating cycle.
During preheating, the six indicator lights flash in an alternating pattern.
7. Allow preheating to finish or cancel it
The warming cycle may take up to approximately three minutes. When the preset temperature or maximum warming time is reached, the indicator lights flash five times and the device enters standby.
To cancel preheating, press the MODE and TIME buttons simultaneously. The device will return to standby, with Low selected as the default setting.
Do not place the treatment head on the patient during preheating. Detecting contact can cancel the warming cycle.
8. Select the prescribed mode
Press MODE to cycle through:
| Setting | Duty cycle | Listed effective intensity | Practical description |
|---|---|---|---|
| Low | 5% | 0.08 W/cm² ±20% | Low-duty-cycle pulsed output |
| Medium | 50% | 0.80 W/cm² ±20% | Higher-duty-cycle pulsed output |
| High | 100% | 1.60 W/cm² ±20% | Continuous output |
The percentage refers to the proportion of each cycle during which ultrasound energy is delivered. It should not be treated as a simple pain or comfort scale.
9. Select treatment time
Press TIME to choose 5, 10, or 15 minutes. Selecting a time starts the treatment cycle.
The time can be adjusted during treatment by pressing the Time button again. Use only the duration specified by the prescribing practitioner.
10. Keep the sound head moving
Place the applicator flat against the gel-covered skin and move it continuously in slow, overlapping circular motions.
Maintain:
- Full contact with the skin
- Adequate gel beneath the treatment head
- A smooth, consistent speed
- Even coverage of the prescribed treatment area
Never hold an active sound head stationary. Remaining over one point can concentrate ultrasound energy and increase the risk of discomfort or tissue injury.
11. End treatment
At the end of the selected time, treatment stops and the indicator lights turn off. Slide the physical switch downward toward OFF, disconnect the adapter, and clean the applicator.
The attached manual describes use under professional direction and limits the home-use schedule to no more than two or three sessions per day using 15-minute treatment intervals unless otherwise instructed by the prescriber.
Frequently asked questions
Does the head-warming feature continue during treatment?
No. It is a pre-treatment comfort feature. The sound head is warmed before treatment begins, and the warming function turns off once therapy starts.
A lack of noticeable warmth during treatment does not automatically mean the unit has stopped operating.
Can I skip the warming cycle?
Yes. Press the Mode and Time buttons simultaneously during preheating. The unit will enter standby with the Low mode selected.
Why did the warming cycle stop when I placed the head on my skin?
The load-detection system may have detected contact. The device automatically exits preheating if it detects a load during the warming cycle.
To restart the warming function, turn the device off and then back on.
Does the US Pro 2000 have pulsed and continuous ultrasound?
Yes. The Low and Medium settings use 5% and 50% duty cycles. High uses a 100% duty cycle, which is continuous ultrasound. Current Richmar materials likewise describe the device as providing pulsed and continuous operation.
What does 1 MHz mean?
The treatment head operates at an ultrasound carrier frequency of approximately 1 megahertz. This is a technical device characteristic that is separate from the selected duty cycle or output intensity.
The user should not attempt to select treatment parameters based solely on an assumption about tissue depth. Follow the protocol given by the licensed practitioner.
Does the US Pro 2000 run on batteries?
No. The DU3035 is powered by an AC/DC wall adapter. There is no battery compartment or rechargeable internal battery listed in the manual.
Can I use a replacement power adapter?
Use only the original or manufacturer-approved adapter with the specified electrical output. An adapter that physically fits may still have the wrong voltage, current capacity, polarity, or safety certification.
Using an unapproved or modified adapter may damage the device, create a safety hazard, and void warranty coverage.
Why is ultrasound gel required?
Air is a poor coupling medium for therapeutic ultrasound. Gel fills small spaces between the treatment head and skin, allowing the sound energy to transfer more consistently.
Poor gel coverage can activate the coupling-detection system and interrupt treatment.
Can I use massage lotion instead of ultrasound gel?
Not unless the product is specifically approved as an ultrasound coupling medium. Ordinary lotions, creams, and oils may not provide reliable acoustic coupling and could damage the applicator or interfere with treatment.
Can the US Pro 2000 be used without gel?
No. The manual requires ultrasound transmission gel.
How large should the treatment area be?
The manual recommends an area approximately twice the diameter of the sound head. Larger areas may receive uneven exposure during a short session.
Can the treatment head be held still?
No. Keep it moving in a slow, flat, circular motion while maintaining full skin contact.
Can the US Pro 2000 be used underwater?
Only the designated metal treatment-head portion carries the IPX7 protection identified by the manufacturer. The rest of the device, its connector, cable junction, and adapter, must not be submerged.
Current manufacturer materials state that the metal portion can withstand temporary immersion for up to 30 minutes at a depth not exceeding one meter. Underwater treatment should be performed only when it is specifically prescribed and the current instructions supplied with the unit permit it.
Never use the powered device in a hydrotherapy room or other environment where the adapter, connector, or device housing could become wet.
Contraindications and areas where ultrasound should not be applied
Do not use the US Pro 2000 when any contraindication applies. Contact the prescribing practitioner when there is uncertainty.
| Do not use in or over | Reason or manual warning |
|---|---|
| Eyes | Ultrasound should not be directed over the eyes |
| Bone-growth centers before skeletal maturity | Treatment is prohibited until bone growth is complete |
| A healing fracture | The manual specifically prohibits application over a healing fracture |
| Malignant tumors | Do not treat in the region of a known or suspected malignancy |
| Carotid sinus, carotid arteries, larynx or pharyngeal muscles | These are specifically prohibited treatment regions |
| Ischemic or severely circulation-impaired tissue | Increased metabolic demand could exceed the available blood supply |
| Areas under anesthesia or with impaired sensation | The patient may be unable to detect excessive or uncomfortable exposure |
| Spinal cord following laminectomy | Do not treat where major protective tissue has been removed |
| Active bleeding or a bleeding disorder | The manual lists hemorrhagic diathesis and hemophilia as contraindications |
| Wounds, infected skin, dermatitis or ringworm | Treatment is limited to appropriate intact skin |
| Recent surgical areas | Avoid unless expressly cleared by the treating clinician |
| Sunburned or highly sensitive skin | Greater risk of irritation or discomfort |
| Bony prominences | The manual instructs users to avoid them |
| Metallic implants, especially cemented prostheses | The manual prohibits treatment over these locations |
| Metal, plastic or silicone skin implants | Listed as areas where the device should not be applied |
| Implanted neurostimulation electrodes or systems | Potential for tissue injury and damage to the implanted system |
| Demand-type pacemakers | The manual lists these as contraindicated |
| Thoracic region of a person with a pacemaker | Specifically prohibited |
| Pregnancy | The manual prohibits use during pregnancy |
| Menstruation | The caution section advises against use during the menstrual cycle |
| Acute illness, fever or unstable health | Medical review is required before treatment |
| Tuberculosis | Listed among conditions in which the device should not be used |
| Abnormal blood pressure or significant heart disease | Requires medical evaluation and direction |
| Facial neuralgia or directly over neuralgia points | Listed as a precaution in the manual |
The device should not be used on infants, young children, cognitively impaired persons, intoxicated persons, severely fatigued persons, or anyone unable to reliably communicate discomfort.
Important warnings
- Stop immediately if treatment becomes painful, sharply uncomfortable, or produces an unexpected reaction.
- Do not use within approximately two meters of any operating shortwave equipment.
- Do not use this product in a wet room.
- Do not immerse the complete device in water or cleaning solution.
- Do not operate the device beside or stacked with other electronic equipment unless normal operation has been verified.
- Do not use it simultaneously with ECG or other electronic monitoring equipment unless the current manufacturer instructions and clinical protocol specifically allow it.
- Do not modify the device, applicator, cable, or adapter.
- Use controls or settings only as described by the manufacturer.
- Keep the device and adapter away from children.
- Keep the sound head moving throughout active treatment.
US Pro 2000 troubleshooting table
| Problem or indicator | Likely cause | Recommended action |
|---|---|---|
| No lights appear | The wall adapter is not fully connected | Reinsert the wall plug and the DC connector |
| No lights appear | The power switch is still off | Slide the switch upward toward ON |
| No lights appear after reconnecting | The adapter, outlet or device may be defective | Test the outlet with another safe appliance; stop using the unit if it remains unresponsive |
| Lights operate normally but no treatment output is apparent | Incorrect mode or time selection | Recheck the prescribed Mode and Time settings |
| Six lights flash alternately | Normal preheating cycle | Wait up to approximately three minutes or cancel with Mode + Time |
| Indicators flash five times | Preheating is complete | The device has entered standby; select the prescribed mode and time |
| Time light flashes once | Poor sound-head contact or insufficient coupling | Add gel, flatten the applicator and restore full contact |
| The time light flashes twice | Treatment-head temperature exceeded approximately 42°C/107°F | Stop and allow the head to cool below approximately 40°C/104°F |
| Treatment stops when the head is lifted | The load-detection system has interrupted output | Restore gel contact and keep the head flat against the skin |
| Warming stops early | The device detected contact during preheating | Turn the unit off and back on to restart warming |
| The device does not feel warm during treatment | Warming is pre-treatment only | Confirm that a treatment time and mode are selected; absence of warmth alone does not establish a fault |
| Treatment feels sharp, hot or painful | Poor coupling, stationary applicator, unsuitable parameters or contraindicated area | Stop immediately, inspect gel/contact and contact the prescribing practitioner |
| Treatment repeatedly pauses | Gel may be too thin, drying out or uneven | Apply additional ultrasound gel and maintain consistent contact |
| The applicator has a crack | Liquid may enter the treatment head | Discontinue use and arrange inspection or replacement |
| The device was dropped | Internal or applicator damage may not be visible | Do not use until its condition has been evaluated |
| The device was submerged | Liquid may have entered the housing | Disconnect it and contact an authorized service provider; do not retest it yourself |
| The replacement adapter becomes hot or the unit behaves abnormally | The adapter may be incompatible | Disconnect immediately and use only the approved adapter |
| The unit still will not operate after basic checks | Internal service may be required | Contact Balego or Richmar technical support; do not open the housing |
For purchasing and order support, use the Balego contact page.
Cleaning and maintenance
How should the applicator be cleaned?
After every treatment:
- Turn the power switch off.
- Unplug the adapter.
- Wipe away all remaining ultrasound gel.
- Clean the treatment surface with a damp cloth or soft tissue.
- Dry it before storage.
For routine cleaning, the manual permits lukewarm water and a nonabrasive household cleaner that does not contain alcohol. When disinfection is required, use a cloth moistened with a compatible antimicrobial cleaner.
Do not pour or spray cleaner directly into the device.
Can alcohol be used?
The attached manual advises using a nonabrasive cleaner without alcohol. Follow the current cleaning instructions supplied with the device and the disinfectant manufacturer’s compatibility directions.
How often should the cable and adapter be cleaned?
The manual recommends wiping the head, cable, and adapter daily with a soft cloth lightly dampened with lukewarm water.
The adapter must be disconnected from power before cleaning.
What should be inspected during cleaning?
Look for:
- Hairline cracks in the applicator
- Separation of the metal treatment surface
- Damage at the cable entry point
- Cuts, abrasions or exposed conductors
- Bent or loose adapter connectors
- Gel or liquid entering the device housing
Discontinue use if damage is found.
Storage instructions
Store the US Pro 2000:
- In its protective case
- In a dry, well-ventilated location
- Away from direct sunlight and excessive heat
- Away from high moisture
- Without heavy objects placed on top of it
- With the cable loosely arranged rather than sharply bent
| Storage specification | Range |
|---|---|
| Temperature | 14°F to 122°F |
| Relative humidity | 20% to 93% |
The listed operating environment is 5°C to 40°C, 30% to 75% relative humidity, and 800 to 1060 hPa atmospheric pressure.
Electromagnetic compatibility FAQ
Can a mobile phone interfere with the device?
Portable and mobile radio-frequency equipment can interfere with medical electrical equipment under some conditions. If the US Pro 2000 behaves abnormally, move phones, radios, wireless transmitters, and other electronic equipment farther away and restart the unit.
Can it be operated beside another medical device?
The manual advises against operating the device adjacent to or stacked with other equipment unless normal performance has been verified in that arrangement.
How far should radio transmitters be kept from the device?
The manual provides the following recommended minimum separation distances:
| Transmitter power | 150 kHz–80 MHz | 80–800 MHz | 800 MHz–2.5 GHz |
|---|---|---|---|
| 0.01 W | 0.12 m | 0.12 m | 0.23 m |
| 0.1 W | 0.37 m | 0.37 m | 0.74 m |
| 1 W | 1.17 m | 1.17 m | 2.33 m |
| 10 W | 3.69 m | 3.69 m | 7.38 m |
| 100 W | 11.67 m | 11.67 m | 23.33 m |
Actual radio-frequency behavior can be affected by walls, objects, building construction, and people. Relocate or reorient the device if abnormal operation occurs near a transmitter.
US Pro 2000 symbols explained
| Symbol | Meaning |
|---|---|
| SN | Serial number |
| Warning triangle | Read and follow the operating instructions and safety warnings |
| Crossed-out wheeled bin | Do not discard as ordinary household waste; use an appropriate electronics collection program |
| Type BF | Type BF applied part |
| Double square | Class II electrical equipment |
| Open manual/book symbol | Refer to the instruction manual |
| IPX7 | Temporary water-immersion protection applies only to the designated treatment head |
IPX7 does not mean the entire handheld unit or adapter can be immersed.
Warranty and return questions
How long is the warranty?
The attached manual lists a one-year warranty beginning on the purchase date. Proof of purchase may be required.
Repair or replacement does not restart or extend the original warranty period.
What may not be covered?
The manual excludes damage associated with:
- Failure to follow the instructions
- Improper handling or treatment
- Unauthorized repair or tampering
- Transportation damage
- Accessory failure
- Modified adapters
- Adapters not supplied or approved by the manufacturer
- Use outside the use environment described in the manual
What did the original manual require for returns?
The manual states that returns were to be approved in advance and assigned a return-authorization number. It also lists requirements involving original packaging, included accessories, manuals, serial numbers, return deadlines, and possible restocking or freight charges.
Those terms may not be identical to Balego’s present policy. Customers should review the current Balego policies and contact Balego before returning a device.
US Pro 2000 compared with other ultrasound options
The US Pro 2000 occupies the middle ground between a basic handheld ultrasound unit and a professional multi-frequency clinical platform. Current manufacturer and Balego specifications support the following comparison.
| Feature | US 1000 DU1025 | US Pro 2000 DU3035 | Intelect Transport 2 |
|---|---|---|---|
| Balego link | Portable ultrasound kit | Portable ultrasound kit | Intelect Transport 2 |
| General format | Basic handheld ultrasound | Higher-feature handheld ultrasound | Professional portable clinical platform |
| Frequency | 1 MHz | 1 MHz | 1 MHz and 3.3 MHz |
| Output | Pulsed | Pulsed and continuous | Pulsed and continuous |
| Duty-cycle choices | 8%, 14%, 29% | 5%, 50%, 100% | 10%, 20%, 50%, 100% |
| Timer | 30-minute auto-off | 5, 10, or 15 minutes | Adjustable professional interface |
| Sound-head warming | No listed feature | Yes | Not the primary differentiator |
| Contact monitoring | Basic handheld design | Automatic load detection | Adjustable coupling-detection support |
| Applicator | Built-in | Built-in 4 cm² ERA | Interchangeable 2, 5 and 10 cm² options |
| Display | Basic indicator controls | LED indicator controls | Color display |
| Electrotherapy | No | No | Available on the Combo model |
| Power | Wall adapter | Wall adapter | Mains or optional battery, depending on configuration |
| Best suited to | Simple clinician-directed portable treatment | Clinician-directed portable treatment needing more control | Professional clinic, athletic training, or mobile clinical workflow |
Choose the US 1000 when simplicity and a pulsed-only handheld design are the priorities.
Choose the US Pro 2000 when the treatment plan requires selectable 5%, 50%, or 100% duty cycles, shorter preset treatment times, head preheating, and automatic coupling protection.
Consider the Intelect Transport 2 when a clinic needs dual-frequency ultrasound, interchangeable applicators, stored protocols, a professional display, or combined ultrasound and electrotherapy capabilities. Balego’s Transport 2 listing identifies 1 and 3.3 MHz ultrasound, multiple applicator sizes, and an optional electrotherapy/ultrasound configuration. (Balego)
For another professional combination option, see the Richmar ComboCare electrotherapy and ultrasound device and Balego’s ComboCare troubleshooting guide.
Related resources
Explore the Ultrasound Therapy and Deep Oscillation collection, compare rehabilitation technologies in Balego’s Which Therapy Modality to Use guide, or shop for conductive gels and contact media as compatible treatment supplies.
