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  6. Disaster prevention products: "Drop Sensor" "Automatic Unlocking Box"

Disaster prevention products: "Drop Sensor" "Automatic Unlocking Box"

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last updated:Apr 09, 2026

山小電機製作所
山小電機製作所
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Detects shaking and activates automatically. Protection bar to prevent the falling of stored items and storage box that unlocks automatically. 113 units delivered to the Ministry of Defense.

Our company offers "disaster prevention products" that detect earthquake tremors and automatically activate. We have a lineup that includes the "fall sensor," which prevents items from falling off shelves without doors by deploying a protective bar, and the "automatic unlocking box," which allows access to keys for evacuation shelters and disaster storage even when the administrator is absent through automatic unlocking. The automatic unlocking box has been adopted in welfare facilities, management associations, and evacuation shelters. 【Features】 "Fall Sensor" - Two types of protective bars: one that descends and another with a bellows sheet that pops up from below - The acceleration sensor is powered only when the set threshold is exceeded, conserving battery life when there is no shaking - Easy installation on existing storage shelves "Automatic Unlocking Box" - Capable of detecting using water level gauges and inclinometers - After unlocking, it automatically relocks after a set time when the door is closed *For more details, please refer to the materials available for download in PDF format. Feel free to contact us with any inquiries.

    Disaster prevention supplies
0615_yamakodenki_550_550_2029913.jpg

Disaster prevention products: "Drop Sensor" "Automatic Unlocking Box"

0615_yamakodenki_550_550_2029913.jpg
0615_yamakodenki_550_550_2029913.jpg s1.jpg s2.jpg s3.jpg
  • Special site - Product/service details - https://pr.www.ipros.com/yamakodenki/product/

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【Product Specifications】 ◎Drop Sensor Sensing Level: Adjustable from 16 levels of earthquake acceleration corresponding to the seismic intensity scale. ◎Automatic Unlocking Box Sensing Level: Adjustable in 4 levels within the range of seismic intensity 5 weak to 6 weak. Adjustable Re-locking Time: 4 levels of 12 hours, 24 hours, 48 hours, and infinite. Lineup: Three types - large, small, and resin small. Options: For flood disaster, avalanche disaster, remote control, and equipped with a patrol light. 【Implementation Examples】 ◎Drop Sensor Used by precision electronic component manufacturers, technology research centers, university laboratories, etc. ◎Automatic Unlocking Box Used in tsunami evacuation shelters, social welfare corporations, condominium management associations, etc. *We have received many inquiries from local governments beyond the above. 【Other Disaster Prevention Product Lineup】 ■Seismic Wagon Catcher ■Seismic Breaker ■Materials for Disaster Prevention Radio Stations, etc.

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Falling object prevention device using a drop sensor.

Falling object prevention device using a drop sensor.

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Earthquake automatic unlocking box

Earthquake automatic unlocking box

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Shelf storage item fall prevention device "Fall Sensor"

Shelf storage item fall prevention device "Fall Sensor"

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Notice of Participation in the 30th "Disaster Prevention Technology Exhibition" from February 5 (Thursday) to February 6 (Friday), 2026.

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Yamagoko Electric Manufacturing Co., Ltd. will be exhibiting at the "Disaster Prevention Technology Exhibition (Natural Disaster Countermeasure Technology Exhibition)" held at Pacifico Yokohama. We promote disaster countermeasures for issues such as the Tokyo metropolitan area earthquake, typhoons, and sudden heavy rain through "Disaster Prevention × Technology." This exhibition will bring together approximately 150 companies and organizations, showcasing over 500 products and technologies. Additionally, around 60 seminar sessions will be held over the two days. We sincerely look forward to your visit.

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山小電機製作所

山小電機製作所

Information and Communications

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Our company has been engaged in the design and manufacturing of various communication devices for over 70 years since its establishment, with a motto of the latest technology and quality. We supply our products to various NTT Group companies across the country, as well as to government agencies and other telecommunications companies, and our technology and products have earned a high level of trust. We strive to enhance our knowledge and advanced technology, aiming to contribute broadly to the ever-evolving information and communication (IT) industry.

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