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  6. Underfloor electronic dehumidification unit 'DRY PRO' Ver3

Underfloor electronic dehumidification unit 'DRY PRO' Ver3

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Under-bed dehumidification series

last updated:Oct 01, 2025

セイホープロダクツ 業務本部
セイホープロダクツ 業務本部
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Contributes to the suppression of condensation and mold under the floor. A new model compatible with the foundation packing method has been introduced.

The "DRY PRO" Ver3 is an electronic dehumidifying and ventilation unit for underfloor use, combining a Peltier cooling device with a dedicated stirring and diffusion-type blower. In addition to the diffusion-type model "TYPE-D" for foundation insulation methods, a new model "TYPE-C" compatible with foundation packing methods has been added to the lineup. It can dehumidify even in areas where moisture tends to accumulate by stirring a wide range of air. It helps suppress moisture and condensation under the floor, contributing to the prevention of mold, pests, and decay fungi in wooden components. Furthermore, with the version upgrade in June 2024, a powerful dehumidification operation mode has been added. The surrounding temperature range for dehumidification operation (low-temperature dehumidification operation range) has been expanded, now accommodating surrounding temperatures down to 5°C. 【Features】 ■ Easy installation with a φ22 drainage hole (no drainage pump required) ■ Automatic operation possible with a dedicated indoor controller ■ The direction of the aluminum duct of the blower can be set freely ■ Dehumidification capacity of 1800mL per day (depending on conditions) ■ Uses non-fluorinated electronic cooling technology ■ Compatible with underfloor flooding sensors (optional) *For more details, please refer to the PDF document or feel free to contact us.

    Heating and cooling equipment and facilities
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Underfloor electronic dehumidification unit 'DRY PRO' Ver3

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top.jpg image_02.png image_03.png image_04.png image_06.png IPROS89841294061686190109.png DC-330(Ver3).jpg
  • Underbed Dehumidifier Series
  • Special site - Product/service details - https://pr.www.ipros.com/seiho-sdk/product/

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【Specifications (Excerpt)】 <Common to TYPE-C and TYPE-D> ■ Electronic Dehumidifier - Rated Voltage: AC100[V] - Rated Frequency: 50/60[Hz] - Rated Power Consumption: 235[W] (normal), 130[W] (low operation) ■ Blower - Rated Voltage: AC100[V] - Rated Frequency: 50/60[Hz] - Rated Power Consumption: 26/30[W] * We also offer the 'Dry Pro Trial Kit' as a suggested product. * For more details, please refer to the PDF document or feel free to contact us.

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Underfloor electronic dehumidification unit 'DRY PRO' Ver3

Underfloor electronic dehumidification unit 'DRY PRO' Ver3

PRODUCT
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Foundation packing and foundation insulation method moisture issues under the floor [TYPE-C]

Foundation packing and foundation insulation method moisture issues under the floor [TYPE-C]

TECHNICAL
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Foundation packing and foundation insulation method moisture issues under the floor [TYPE-D]

Foundation packing and foundation insulation method moisture issues under the floor [TYPE-D]

TECHNICAL
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[Revised Edition] Guide to Underfloor Measures That Must Be Checked and Addressed After Heavy Rain Disasters

[Revised Edition] Guide to Underfloor Measures That Must Be Checked and Addressed After Heavy Rain Disasters

TECHNICAL
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About the "Automatic Stop Function After 10 Years" for the Underfloor and Attic Ventilation Fan Series.

About the "Automatic Stop Function After 10 Years" for the Underfloor and Attic Ventilation Fan Series.

TECHNICAL
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Is a ventilation fan under the floor necessary?

Is a ventilation fan under the floor necessary?

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Company Profile

Company Profile

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News about this product(6)

Timer ST-301e

About the "Automatic Stop Function After 10 Years" for the Underfloor and Attic Ventilation Fan Series.

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Regarding the "Automatic Stop Function after 10 Years" Automatic stop has been implemented in products manufactured from 2015 onwards. ■ Overview of Inspection Period Notification Function The dedicated controllers and timers for underfloor and attic ventilation fans sold since 2015 are equipped with the safety function mentioned on the left. Starting from November 2025, the automatic stop function will be activated sequentially for products manufactured in 2015. ■ Response Procedure at the Time of Automatic Stop It is expected that customers will contact the sales and installation stores. We ask that sales and installation stores respond according to the following procedures: 1. Conduct a safety inspection based on the "Underfloor and Attic Ventilation Fan Inspection Checklist." * Please ensure to check for looseness and retighten the connections of the controller and timer. If any liquids such as water, oil, or detergent have come into contact, the internal components may corrode, leading to fire hazards; therefore, replacement of the main unit is necessary. 2. If there are no issues, press and hold the set button to restart the operation. ■ Start of Shipment for Controllers/Timers with Inspection Period Notification Function For details regarding the shipment history of timers, please contact our company’s sales representative or quality control department.

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Heat dissipation fins for the dehumidifier.

Product condition and underfloor environment of the Dry Pro type-C after approximately 2.5 years of use.

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This is a report on the inspection results after approximately two and a half years of using the Dry Pro Type-C in the newly added crawl space (foundation packing method) during the renovation. The inspection results showed that there was no dust or other substances adhering to the heat dissipation fins of the dehumidifier, the dehumidifying fins, the intake of the blower, or the fan that could negatively affect performance. Additionally, there were no foreign substances or dust adhering to the drain hose for dehumidified water or the pump tank that could adversely impact performance, and all components were functioning normally. (Photo: Heat dissipation fins of the dehumidifier) The newly added crawl space was located on the north side in a poorly ventilated area, but no signs of mold or condensation were observed, confirming that a dry state was maintained. (Photo: Installation status) Please be sure to read the [related materials] and [related links]. ↓ ↓ ↓

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Remote live inspection service

  • Seminar・Event

■Live Inspection Start Our company conducts inspections to provide our clients with a deeper understanding of the effectiveness, safety, and installation information of the products they sell. This includes visits to our simulation studio, experimental laboratory, test house, and production line. By observing the visualization of product effects, safety tests, and durability test scenes, we have received feedback such as "I have gained a deeper knowledge of the products" and "I can confidently propose to end users." We are pleased to announce the launch of our 'Remote Live Inspection Service,' focusing on smoke simulation and security systems, which have been the main features of our inspections. Taking into account feedback such as "I am interested, but it's difficult to come to Fukuoka due to the distance" and "It's challenging to coordinate schedules for multiple people," the content will be a condensed version, but we will provide an interactive explanation similar to what you would experience in person. 【Flow of Remote Inspection】 ■ For underfloor ventilation... Approximately 30 minutes ■ For security... Approximately 20 minutes ■ Q&A... About 10 minutes

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[Revised Edition] Guide to Underfloor Measures That Must Be Checked and Addressed After Heavy Rain Disasters

  • Other・notification

In homes where "flooding under the floor" has occurred due to heavy rain, various damages and risks of secondary damage may be lurking in unseen areas. To protect the durability of the house and the health of the family, we have organized the points that should be prioritized for inspection and action. 【Table of Contents】 1. Why is inspecting under the floor essential? 2. 【Emergency Checkpoints】First, check here! A. Presence of flooding or moisture B. Condition of the wood C. Presence of unusual odors D. Signs of termites or pests E. Condition of ventilation openings 3. Immediate response methods when damage is discovered - Mild situations with little standing water or moisture - - Situations with standing water where structural impact is a concern - The damage from flooding under and above the floor due to heavy rain requires significant recovery efforts, including cleanup. We sincerely sympathize with those who have been affected. Please be sure to read the 【related materials】【related links】. ↓ ↓ ↓

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セイホープロダクツ

セイホープロダクツ 業務本部

Building materials, supplies and fixtures manufacturers

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In the 21st century, the way human society exists on a global scale is being questioned. In this era of rapid change, what kind of aspirations should we have when engaging in business? SEIHO's new concept naturally emerged from such inquiries. "Compassion" is the new concept. Rather than pursuing extravagant ideas, we want to delve deeper into a simple concept that everyone can be confident in. We wish to return to our origins to realize this concept. In a time when a diverse array of information is overflowing, misjudging the clear distinction between "purpose" and "means" can render even effective technologies futile. SEIHO will firmly place "principles, fundamentals, and essence" as the axis of our management decisions, learning from the wisdom of past sages while creating genuine technologies and services that benefit society.

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