Is a underfloor ventilation fan necessary?

Exhaust type + diffusion type unit! A subfloor ventilation series that detects humidity conditions and draws in dry air from beneath the floor.

The system detects the amount of water vapor (absolute humidity) and independently controls the exhaust ventilation system and the diffusion-type blower. When there is a high amount of water vapor, only the diffusion-type blower operates, and when it is low, the exhaust ventilation system operates in conjunction, bringing in dry air from below the floor. POINT 1: Optimal independent operation of exhaust and blowing with absolute humidity sensors POINT 2: Optimal deodorization operation with standard phytoncide POINT 3: Detects abnormalities in the underfloor ventilation fan and underfloor water issues, displaying them on the controller. 【Features】 ○ Effective against underfloor moisture, condensation, and mold ○ Powerful exhaust and diffusion For more details, please contact us or download the catalog.

• Ventilation system
• Unit and other construction
• Air compressors, blowers and pumps

Exhaust type + stirring type unit type

The system detects the amount of water vapor (absolute humidity) and independently controls the exhaust ventilation system and the mixing fan. When there is a high amount of water vapor, only the mixing fan operates, and when it is low, the exhaust ventilation system operates in conjunction to bring in dry air from below the floor. POINT 1: Optimal independent operation of exhaust and air supply using absolute humidity sensors POINT 2: Optimal deodorization operation with standard phytoncide POINT 3: Detects abnormalities in the underfloor ventilation fan and water issues, displaying them on the controller. 【Features】 ○ Effective for underfloor moisture, condensation, and mold prevention ○ Powerful exhaust and mixing For more details, please contact us or download the catalog.

• Ventilation system
• Unit and other construction
• Air compressors, blowers and pumps

A comfortable indoor environment! Prevents condensation and extends the lifespan of the building.

The "Kazetaro" underfloor ventilation system forcibly introduces air into the crawl space, maintaining a comfortable condition for the wood. It is particularly effective in eliminating condensation. Underfloor ventilation also impacts the indoor environment, reducing conditions that promote the growth of dust mites and mold, thus benefiting the health of the family. The Kazetaro unit features a hybrid sensor that detects the amount of water vapor (humidity) in the outside air, and a hybrid controller that independently controls the Kazetaro blower type and Kazetaro mixing type, creating optimal ventilation operation for the wood in the crawl space. 【Features】 ○ Prevents the breeding of pests by improving ventilation effectiveness ○ Forcibly introduces air into the crawl space to prevent condensation ○ Maintains a comfortable condition for the wood, extending the lifespan of the building ○ Reduces conditions for the growth of dust mites and mold, creating a comfortable indoor environment For more details, please contact us or download the catalog.

• Ventilation and smoke exhaust equipment
• Unit and other construction

"Humidity" that affects the lifespan of the house and the health of its residents. The cause may be the ventilation in the crawl space or attic? Introducing products for humidity control in homes! Free materials on "The Importance of Ventilation" available!

Are you taking measures against humidity in your home? - The underfloor storage in the kitchen and bathroom smells musty. - The flooring creaks. - There are stains and mold on the ceiling and in the closet... - The air conditioning is not effective. This may be due to humidity in the crawl space or attic. Hidden issues in these areas can significantly affect the lifespan of the house and the health of its occupants. Seiho Products offers solutions for home troubles with products that provide underfloor ventilation and dehumidification, attic ventilation, and devices that detect leaks caused by flooding or deterioration and damage to drainage pipes, alerting you to abnormalities. <Product lineup> *Partial excerpt - Underfloor ventilation system - Underfloor dehumidification system - Underfloor flooding sensor with timer *New release - Attic ventilation system If you are struggling with humidity, condensation in the crawl space, or heat and condensation in the attic, please consult us! Presentations using demo units and ventilation effect experiment boxes are also available. Please contact us for conditions. Additionally, we offer a document featuring a column on foundation insulation methods that may cause mold and condensation. Download it along with our product catalog!

• Underfloor storage unit
• Ventilation system

Improved air conditioning efficiency! A ventilation system that eliminates the causes of condensation and prolongs the life of your home.

The "Kaze no Suke Blower 24" is a system that continuously ventilates the attic for 24 hours, lowering the air pressure compared to the forced-ventilated interior, which prevents chemical substances from flowing into the room and creates a safe living environment. It detects the temperature in the attic with a temperature sensor and allows for switching between strong and weak operation. Additionally, it features a condensation mode that is effective for removing condensation. 【Features】 ■ Discharges hot air and improves cooling efficiency - Reduces excessive use of air conditioning, benefiting family health and saving on electricity bills. ■ Shuts out condensation - Actively circulates air in the attic to minimize temperature differences, eliminating the causes of condensation and prolonging the life of the building. ■ Supports the health of the family and home - With high ventilation capacity, it effectively expels formaldehyde and VOCs from the attic to the outdoors. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation system
• Roof and gutter construction

Are you struggling to explain "safety" to the client using just drawings? • The risks in blind spots are difficult to convey to the client through drawings alone. • Safety measures often become a target for cost reduction, making it hard to communicate their necessity. • There is a concern that the client might say, "It's more dangerous than I thought," after completion. Risks that are clear to design professionals are not easily understood intuitively by clients who are outside the field. This document is not just a simple explanation of sensor functions; it is a guide to visually explain "why sensors are necessary in those locations." It can be used directly as explanatory material for clients. Here are three key points for utilizing this document: 1. Visualization of Risks Blind spots during departure and contact risks within the site are illustrated clearly. 2. Clarification of Selection Criteria A comparison table outlines the differences between complex sensor types such as infrared, ultrasonic, and loop coils. 3. Diagram of System Configuration It illustrates not just the sensors alone, but how they are combined with rotating lights and control panels, providing practical assistance for electrical equipment design. Please make use of this to prevent "rework after completion" and "accident risks."

In facilities operating nurse call systems, we have made bed exit sensors wireless, allowing them to notify in conjunction with the nurse call system. By simply connecting the mat sensor "Foldable Thin Matt-kun," the body movement call "Ugo-kun," and the wheelchair body movement call "Ayumi-chan" to the transmitter HB-RS, you can make the bed exit sensor wireless. The infrared sensor "Just Place Pole-kun" has the transmitter HB-RS built-in. This helps prevent accidents caused by falls, slips, or wandering, contributing to the efficiency of medical operations. 【Features】 ○ Wireless conversion by simply connecting existing sensors to the transmitter HB-WSK. ○ Bed exit sensors notify wirelessly in conjunction with the nurse call system. ○ Up to 5 transmitters can be registered with one receiver. ○ The communication distance between the transmitter and receiver is approximately 10 meters. ◎ For more details, please contact us or download the catalog.

We will introduce the implementation results of the sensor technology developed by the Hotron Group, which has been cultivated over more than half a century, through customer case studies. In addition to automatic door sensors, we also offer a wide range of vehicle detection sensors and nursing/care sensors. We have many implementation examples available, so please take a look at the case study page.

Full and empty management refers to the real-time display of parking availability and the management of efficient use of parking spaces. By utilizing Hotron's sensors, drivers can quickly discover available parking spaces, achieving efficient parking lot operations. ■ For large parking lots, the "floor management method" and "block management method," which focus on cost reduction, are recommended. Sensors are installed at regular intervals to count the number of vehicles passing through. This method offers the advantage of easy installation and low costs. 【Target Products】 - Vehicle Count Sensor CCS2 - Ultrasonic Sensor HM-UX2/UW2 ■ For smaller scale operations, the "space management method," which installs sensors in each parking space to display availability with high accuracy, is recommended. By ensuring accurate full and empty displays, it helps prevent unnecessary entry of new vehicles and enables safe parking lot operations. 【Target Products】 - Occupancy Detection Sensor HM-UX2/UW2 - Occupancy/Pass Detection Sensor HM-LC6 - Occupancy Detection Sensor HM-LC7/LC7-FLS - Occupancy/Pass Detection Sensor HM-S6 - Occupancy Detection Sensor HM-S8

We will be exhibiting at the "JECA FAIR 2026 - 74th Electrical Industry Exhibition." Our company, a 110-year-old electrical materials manufacturer, operates under the motto "Turning desires into reality," providing various electrical materials and metal processing products. At our exhibition booth, you will be able to see not only pull boxes but also actual products such as conduit accessories, ducts, and supports. Additionally, we will hold seminars several times a day on strength calculations and seismic calculations. If you have concerns about whether your material selection is optimal, if the pricing is appropriate, or if it takes too long to receive calculation documents, please feel free to consult with us at our booth (3-39). Our experienced design staff will be available to speak with you directly! 【Main Exhibits】 ■ Seismic supports ■ Metal ducts ■ Accessories for conduits ■ Accessories for flexible conduits ■ Pull boxes ■ Support materials 【Exhibition Information】 Date: May 27 (Wednesday) - May 29 (Friday), 2026 Venue: Tokyo Big Sight, Halls 1, 2, 3, and 8