Ryoyo Electro Supports Implementation of kiwi technology’s WBGT Monitoring System for Hot Work Environments Adopted by Toyota Industries Corporation’s Nagakusa Plant, Contributing to Improved Safety and Health Through Centralized Management of Manufacturing Site Data

Ryoyo Electro Supports Implementation of kiwi technology’s WBGT Monitoring System for Hot Work Environments

Adopted by Toyota Industries Corporation’s Nagakusa Plant, Contributing to Improved Safety and Health Through Centralized Management of Manufacturing Site Data

September 30, 2025

The WBGT monitoring system for hot work environments developed by kiwi technology Inc. (Headquarters: Taipei, Taiwan; CEO: Steve Lo) has been implemented at the Nagakusa Plant of Toyota Industries Corporation (Headquarters: Kariya, Aichi, Japan; President: Koichi Ito) with support from electronics trading company Ryoyo Electro Corporation (Headquarters: Chuo-ku, Tokyo, Japan; President and Executive Officer: Moritaka Nakamura).

Background of Implementation

The Occupational Safety and Health Regulations in Japan were revised on June 1, 2025, requiring employers to implement heat stroke prevention measures in work environments where WBGT values are 28°C or higher, or air temperature is 31°C or higher, for continuous periods of 1 hour or more, or exceeding 4 hours per day. Toyota Industries Corporation’s Nagakusa Plant required a system capable of measuring and visualizing WBGT in real-time across all work areas within the factory and centrally managing information from multiple factories.

kiwi technology’s WBGT Monitoring System for Hot Work Environments

This system consists of the LAS-603V2 (temperature and humidity sensor), gateway, and kiwi Cloud server. By customizing various visualization software according to customer requirements, it enables the construction of an ideal system that can grasp the site environment in detail.

Main Features:

• Real-time environmental monitoring (integrated monitoring of temperature, humidity, and WBGT)
• Alert notifications for sudden environmental changes (notification functions that can be freely customized by organizational unit)
• Alert notifications for battery level and communication offline occurrences
• Cloud-based data management
• Graph display function for temperature, humidity, and WBGT
• CSV output of daily and monthly reports
• Centralized management of multiple factory statuses
• Display of temperature, humidity, and WBGT on factory maps (optional feature)

Expected Effects of System Implementation

• Accelerated Response Through WBGT Risk Detection: By measuring temperature, humidity, and WBGT and issuing alert warnings, the site can implement early countermeasures against heat stroke risks
• Work Optimization According to Work Environment: Accumulated data and measured values are utilized for daily work schedule adjustments and rest time settings, contributing to heat stroke risk reduction
• Strengthening Safety Management Systems: By centrally managing data from multiple factories to establish overall trends and countermeasures, achieving consistent safe work environments across all factories

Comment from Toyota Industries Corporation

Koji Hiraiwa, Working Leader, Safety and General Affairs Department, Automobile Business Unit “In recent years, severe conditions described as ‘global boiling’ have continued. At our plant, through initiatives to ‘visualize the hot work environment’ at manufacturing sites utilizing IoT technology, we will strengthen early detection and prevention of employee heat stroke risks, and aim to realize a comfortable workplace environment where people can work with peace of mind.”

Comment from kiwi technology Inc. Japan

Peter Lin, Executive Vice President “We are greatly honored that our system has been adopted by Toyota Industries Corporation. Leveraging the achievements and knowledge cultivated together with a leading company in the manufacturing industry, we will continue to contribute to improving safety and health management for more companies.”

Related Links

Press Release Details: https://prtimes.jp/main/html/rd/p/000000141.000041334.html

Ryoyo Electro Product Information: https://www.ryoyo.co.jp/info/products/34058/

*This system is intended to measure the heat conditions of the work environment and provide alerts, and is not a medical device intended to directly prevent, diagnose, or treat heat stroke.