1. Introduction
The Hwato SDZ III Electro Low-Frequency Acupuncture Stimulator is designed to provide electro-acupuncture treatment, nerve and muscle massage, and relaxation. This device features 6 independent output channels, adjustable frequency, and various working patterns to cater to different therapeutic needs. Please read this manual thoroughly before use to ensure safe and effective operation.
2. Important Safety Information
WARNING: This device is intended for professional use or under the guidance of a qualified practitioner. Improper use can lead to injury. Consult a healthcare professional before using this device, especially if you have pre-existing medical conditions.
- Do not use on individuals with pacemakers, implanted defibrillators, or other electronic medical devices.
- Do not use on pregnant women, infants, or individuals with epilepsy, heart disease, or acute infectious diseases.
- Avoid applying electrodes to areas with skin lesions, open wounds, or sensitive areas like the eyes, mouth, or carotid sinus.
- Keep the device away from water and moisture.
- Ensure the power adapter matches your local voltage requirements (available in 110V and 220V versions).
- Do not disassemble or modify the device.
- Keep out of reach of children.
- Discontinue use immediately if you experience discomfort or adverse reactions.
3. Package Contents
Verify that all items are present in your package:
- Hwato SDZ III Host Unit (1)
- Output Wires (6)
- Needle Electrode Metal Clips (6 pairs)
- Skin Electrodes (6 pairs)
- Power Adapter (1)
- User Manual (1)
4. Product Overview
Familiarize yourself with the components and controls of your Hwato SDZ III device.
4.1 Device Components
- ON/OFF Button: Powers the device on or off.
- Out-connect DC socket: Power input for the DC9V AC adapter.
- Wave Showing Window (LCD Display): Displays mode, frequency, time, and output status.
- Function/Choose Switch: Rotary knob to select treatment modes and functions. Press to confirm selection.
- Output Strength Adjusting Knobs (1-6): Individual knobs to adjust the intensity for each of the six output channels. Rotate clockwise to increase intensity, counter-clockwise to decrease. Turn fully counter-clockwise to the "off" position to disable a channel.
- Six-Output Sockets (1-6): Ports for connecting output wires to electrodes.
4.2 Accessories
- Skin Electrodes: Adhesive pads for surface stimulation.
- Metal Clamps (Filiform Needle-Electrodes): Used to connect to acupuncture needles for electro-acupuncture.
- Output Wires: Connect the device's output sockets to the electrodes/clips.
- DC9V AC Adapter: Power supply for the unit.
5. Setup Instructions
Follow these steps to prepare your Hwato SDZ III for use:
- Unpack: Carefully remove all components from the packaging and verify against the package contents list.
- Power Connection: Connect the DC9V AC adapter to the "Out-connect DC socket" on the back of the main unit. Plug the adapter into a suitable power outlet. Ensure your adapter matches your local voltage (110V or 220V).
Figure 5.1: Rear view showing DC9V power input. 
Figure 5.2: Examples of different regional power adapters. - Connect Output Wires: Insert the output wires into the desired "Six-output sockets" (1-6) on the front of the device.
Figure 5.3: Close-up of the six output sockets. - Attach Electrodes: Attach either the skin electrodes or the metal clips (for acupuncture needles) to the other end of the output wires. Ensure a secure connection.
- Prepare for Application: If using skin electrodes, ensure the skin is clean and dry for optimal adhesion and conductivity. If using metal clips, ensure they are securely attached to the acupuncture needles.
6. Operating Instructions
Operating the Hwato SDZ III is straightforward with its integrated controls.
- Power On: Press the "ON/OFF" button to turn on the device. The LCD display will illuminate.
Figure 6.1: The ON/OFF button (labeled '2' in the diagram). - Restore Default Settings (Optional): If you wish to start with default parameters, long-press the "Function/Choose Switch" (shuttle key) for 3 seconds after startup.
- Select Function/Mode: Rotate the "Function/Choose Switch" to cycle through the available treatment modes (e.g., Continuous, Discontinuous, Dilatational). Press the switch to confirm your selection. The selected mode will be shown on the LCD display.
Figure 6.2: The Function/Choose Switch. - Adjust Frequency: Use the "Function/Choose Switch" to adjust the output pulse frequency, which is continuously adjustable from 1 to 100 Hz.
- Set Treatment Time: Use the "Function/Choose Switch" to set the desired treatment duration.
- Apply Electrodes: Place the skin electrodes on the desired treatment areas or connect the metal clips to inserted acupuncture needles. Refer to anatomical charts for appropriate acupuncture points if needed.
Figure 6.3: Diagram of Fourteen Meridians and acupuncture points for guidance. 
Figure 6.4: Common application areas for nerve and muscle massage. - Adjust Intensity: Slowly turn the individual "Output Strength Adjusting Knobs" (1-6) clockwise for the active channels until a comfortable sensation is felt. Do not set the intensity too high. Each channel can be adjusted independently.
Figure 6.5: The six intensity adjustment knobs. - Treatment Completion: The device will automatically stop after the set time. Turn all intensity knobs to the "off" position and then press the "ON/OFF" button to power off the device.
- Parameter Memory: The device automatically saves the last used treatment parameters, allowing for direct use with the same settings upon next power-on.
- Sleep Function: If no operation is performed for more than 3 minutes after startup (and output channels are closed), the device will automatically enter sleep mode, and the LCD screen will turn off to save power. Operate the "Function/Choose Switch" to awaken the device.
6.1 Working Patterns
The Hwato SDZ III offers several working patterns:
- Continuous Wave: Provides a steady, uninterrupted pulse.
- Discontinuous Wave: Delivers pulses in cycles of 15 seconds ON, followed by 5 seconds OFF.
- Dilatational Wave: Features a thin wave frequency and a dense wave frequency with a ratio of 1:5. The thin wave operates for 5 seconds, followed by 10 seconds off.
7. Maintenance
Proper care ensures the longevity and optimal performance of your device.
- Cleaning: Wipe the main unit with a soft, dry cloth. Do not use abrasive cleaners or immerse the device in water.
- Electrode Care: Clean skin electrodes according to their specific instructions. Replace them when their adhesive properties diminish. Clean metal clips after each use.
- Storage: Store the device and accessories in a cool, dry place, away from direct sunlight and extreme temperatures.
- Battery (if applicable): The device uses an internal DC9V power supply. If it has a replaceable battery compartment (not explicitly stated but implied by 'internal power supply'), ensure batteries are removed if the device will not be used for an extended period.
8. Troubleshooting
If you encounter issues with your Hwato SDZ III, try the following:
- Device Not Powering On:
- Ensure the power adapter is securely connected to both the device and a working power outlet.
- Verify that the power outlet is functional.
- No Output Sensation:
- Check that the output wires are securely connected to both the device and the electrodes.
- Ensure the electrodes are properly applied to the skin or needles.
- Verify that the individual output strength adjusting knobs for the active channels are turned ON and set to a sufficient intensity.
- Confirm that a treatment mode and time have been selected on the LCD display.
- LCD Display is Off (Sleep Mode):
- Operate the "Function/Choose Switch" to awaken the device from sleep mode.
If the problem persists, contact customer support or a qualified technician.
9. Specifications
| Feature | Detail |
|---|---|
| Model | SDZ III |
| Brand | VamsLuna |
| Application | Body (Nerve and Muscle Massage Relaxation, Electro Acupuncture Stimulator) |
| Power Supply | Internal DC9V; AC Adapter Input: 220V/50Hz or 110V/60Hz, Output: DC9V/150mA |
| Input Power | 10.0 VA |
| Output Pulse Shape | Asymmetric Bidirectional Pulse Wave |
| Output Pulse Channels | 6 Channels |
| Maximum Pulse Power | 0.3 VA (at 250 Ω load) |
| Output Pulse Frequency | 1 ~ 100 Hz (Continuously Adjustable) |
| Working Patterns | Continuous Wave, Discontinuous Wave (15s ON, 5s OFF), Dilatational Wave (Thin wave 5s, 10s OFF, 1:5 ratio) |
| Output Current Limit | ≤ 10 mA (at 250 Ω load) |
| Output DC Component | 0 |
| Dimensions (L x W x H) | 210 mm x 100 mm x 300 mm |
| Weight | 1.6 kg (including battery) |
10. User Tips
Based on common user inquiries, here are some helpful tips:
- Read the Manual: Many questions can be answered by thoroughly reading this instruction manual, especially regarding setup and operation.
- Frequency Adjustment: The device offers a wide frequency range from 1 to 100 Hz. Experiment with different frequencies under professional guidance to find what works best for your specific needs and comfort.
- Voltage Compatibility: Ensure you select the correct voltage version (110V or 220V) for your region to prevent damage to the device.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
