Frequently Asked Questions

We recommend replacing it once a year.

The insulating coating on the AC electrode plates gradually deteriorates with use. In our in-house durability tests, the insulating coating on the AC electrode plates failed after approximately 1,000 hours of continuous power supply (continuous use). Furthermore, deterioration may accelerate depending on factors such as indoor humidity and the condition of the electrode plates.

In light of the above points, the fact that many customers use the therapy device frequently, and the belief that excessive deterioration of the AC insulating coating on the electrode plates has a significant impact on treatment effectiveness, we have decided to recommend replacing the device once a year.

In addition to the above , if any of the electrode plates—including the AC electrode plate—are damaged (e.g., damage to the cable sheath, a broken cable, or a damaged electrode plate plug), this may prevent the device from functioning properly or may compromise treatment safety; therefore, please replace them with new ones immediately.

To purchase, please visit the online store listed below, or contact a retailer or Reltech.

The operating principle of the therapy device is that the AC electrode plate applies an electric potential to the body, while the other electrode plate, BD (YD), removes the applied potential. This is because if the AC and BD (YD) electrode plates come into contact during treatment, the electric potential is removed without passing through the body, which reduces the therapeutic effect.

Is the output setting set to "Output 1" or "Output 2"?

After setting the output to "Output 1 + 2," please check it using the Energy Check function.

Have you touched the electrode plates inserted into the Energy Check?

After inserting the electrode plate into the Energy Check, release your grip on the electrode plate to activate the Energy Check.

Are you using the Energy Check on a level surface?

Please activate the Energy Check on a level surface.

Aren't you checking it over and over again?

If you perform the inspection repeatedly, the Energy Check may become charged and stop displaying “OK.” Please wait a while before performing the inspection again.

I can't confirm that.

The Energy Check allows you to verify the following two points:

1. Whether the main unit is outputting a signal—Whether the main unit is malfunctioning
2. Cable Continuity—Whether the Cable Is Conducting Electricity (Due to a Break, etc.)

Please note that the volume of the sound coming from the electrode plates may vary depending on the environment and other factors, so it should not be used as a basis for determining the device’s output.

This is a phenomenon commonly known as "coil noise," and it does not pose a safety risk to the unit.

This is commonly referred to as “coil hum” and occurs to some extent due to vibrations in the coils or transformers used in AC adapters.
Please rest assured that this is not a malfunction.
Furthermore, AC adapters have obtained product safety certification under the Electrical Appliance and Material Safety Act, and compliant products display the Specific Electrical Appliance Mark, so there are no safety concerns .
If this bothers you, we recommend using an extension cord to keep the AC adapter away from your ears.

The use of an insulated mat is a prerequisite for electrotherapy.

Without using the insulating mat, an electric field (a space with an applied voltage) cannot be generated around the body, and the potential therapy function will not work. Therefore, please use the insulating mat. On the other hand , the power supply function — which is separate from the potential therapy function — is not believed to be affected by the use of the insulating mat.

Please note that regardless of the treatment position—whether supine, seated, or otherwise—and regardless of whether a blanket or similar item is placed on top of the insulating mat during treatment, an electric field is expected to be generated as long as neither the body nor the blanket extends beyond the edges of the insulating mat. Therefore, there are no restrictions on the treatment position in this regard. However, from the perspective of promoting the circulation of the supplied electrons throughout the body via the bloodstream, we recommend treatment in the supine position.

Do not wash in a washing machine.

While the material used in insulated mats is not necessarily unsuitable for machine washing, it does not absorb moisture easily, which could cause the washing machine to malfunction. Therefore, we recommend the following care instructions.

1. Wipe it dry with a soft cloth.
2. If the stain is difficult to remove, wipe it with a cloth dampened with a neutral detergent, then let it air dry thoroughly in the shade.

Assuming 5 treatment sessions per day, with each session lasting 30 minutes (2.5 hours of use per day), the monthly electricity cost would be :
1. Reltech MD21 (Power consumption: approx. 2W): approx. 5 yen
2. MSD Reltech (Power consumption: approx. 2W): approx. 5 yen

*Calculated based on an electricity rate of 31 yen per kWh. However, this may vary depending on your utility company and the electricity rate plan you have contracted.

The device works by applying an electrical potential to the body through electrode plate AC, and then extracting that potential through the other electrode plate, BD ( YD).
If electrode plates AC and BD (YD) come into contact with a ring or other jewelry during treatment, the electrical potential will be discharged without passing through the body, reducing the therapeutic effect. Therefore, please remove any jewelry that may come into contact with the electrode plates before treatment. Alternatively, please keep the jewelry as far away as possible during treatment.

We do not recommend turning the device on or off using the extension cord’s switch while the main unit is already turned on . This is because you may not be able to recognize the LED indicating that the power is on, the display, or the audible signals, and there is a risk of electric shock if you attach the electrode pads to your body after the device has started operating.