[Factory/Warehouse] Visualizing WBGT for Heatstroke Prevention! Watchful-kun PRO
WBGT measurement × warning × recording! Ensuring worker safety in indoor work environments against heat stroke | Compliance with heat stroke prevention regulations.
Starting from June 2025, measures against heatstroke will be mandated instead of being a voluntary effort. The "Miharu-kun PRO <WD100-ENV-LCD>" automatically measures, displays, and records WBGT (Wet Bulb Globe Temperature) and temperature-humidity, achieving "visualization" of indoor work environments such as factories and warehouses, along with immediate warnings. ■ Main Features: - Automatic measurement, display, and recording of WBGT and temperature-humidity - Intuitive warnings with a 3-color LED (green, yellow, red) + LCD - Flashing and email notifications for threshold exceedance for immediate response - Stable connection even in large sites via LoRa communication ■ Solving these challenges: ✔ Visualizing the safety of workers ✔ Immediate notifications to site leaders ✔ Strengthening reporting and management through record preservation ✔ Implementation is progressing in factories, logistics warehouses, food processing plants, etc., and it is also utilized as a product eligible for subsidies. ▶ Details: ISA Official Website https://isa-j.co.jp/info/miharu/
basic information
Features of "Miharu-kun PRO <WD100-ENV-LCD>": - Automatic measurement and recording of WBGT, temperature, and humidity - Excellent visibility with 3-color warning and LCD display - LoRa communication (low power, long range, resistant to obstacles) - Connect up to 32 devices with one main unit - Immediate response possible with email notification function - Smooth recording and reporting through log storage ▶ For details and specifications, visit: https://isa-j.co.jp/info/miharu/
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Model number/Brand name
Watchful-kun PRO <WD100-ENV Series>
Applications/Examples of results
Support for heat stroke risk management in indoor work environments such as manufacturing, food factories, warehouses, equipment inspections, and temporary construction offices. With the system revision coming into effect in June 2025, which mandates "measures, system development, and record management for WBGT of 28°C or higher," the Watchful-kun PRO enables reliable risk detection and immediate response. 【Benefits of Implementation】 ✔ Real-time monitoring based on heat index ✔ Immediate notifications to managers and workers, supporting decision-making ✔ Log preservation during abnormal situations, ensuring compliance with laws and audits ✔ Usable across floors and levels through long-distance communication 【Subsidy Support】 Regional revitalization temporary grants Heat stroke prevention project subsidies Subsidies for local government ICT implementation support, etc. We visualize the risks in high-temperature and high-humidity work environments, contributing to the prevention of labor accidents.
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| Model number | overview |
|---|---|
| WD100-N32/N32 | Data collection communication control server (master unit): LoRa wireless communication standard, line of sight approximately 11 km, communication possible up to about 3 km in dense areas. |
| WD100-ENV-LCD | Miharu-kun PRO <Model with LCD> |
| WD100-ENV | Watchful-kun PRO <Model without LCD> |
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News about this product（2）
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Transitioning heatstroke measures in schools and special support schools from 'manual management' to 'automated monitoring' - Recruitment for free demonstration monitors of the WBGT remote monitoring system 'Miharu-kun Pro' has begun (Note: Recruitment for summer 2026 has closed).
ISA Co., Ltd. (abbreviated as ISA, located in Shinjuku, Tokyo, President: Koji Yanagihara) has started recruiting free demonstration monitors for its environmental monitoring system "Miharukun Pro," which enables remote centralized management of WBGT (Wet Bulb Globe Temperature) to reduce the burden of heatstroke measures and strengthen safety management systems in schools and support schools. (※Due to a large number of applications, the recruitment for summer 2026 has been closed.) In the demonstration, the installation locations will be considered based on the operational conditions of various facilities such as classrooms, gymnasiums, schoolyards, and pools. The effects of visualizing environmental data, raising awareness through warning lights and email notifications, and reducing the burden of confirmation for teachers and staff will be confirmed. Through actual operation in school settings, it can contribute to the standardization of heatstroke measures, the acceleration of decision-making, and the efficiency of information sharing, thereby improving safety management systems.
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Immediate response to the "Heat Stroke Warning Alert"! Urgent proposal of heat stroke prevention products that can be used on-site right now.
In response to the "Special Heat Stroke Warning Alert" and the "Mandatory Heat Stroke Measures" that began full-scale operation in June 2025, we are reintroducing our IoT heat stroke countermeasure solutions. The target products are the three series: "Meru Maru-kun + Heat Stroke Alert," "Miharukun PRO," and "Momoko and Ayaka." With this system revision, heat stroke measures have changed from "effort obligations" to "obligations" for all businesses employing workers. As measures are required across all industries and sites, including government agencies, educational institutions, welfare facilities, distribution, and construction, ISA supports the creation of a safe and secure environment through existing products that can be operated immediately. ■ Introduction of three heat stroke countermeasure products (1) Meru Maru-kun + Heat Stroke Warning Alert Email Distribution Service (2) Miharukun PRO (WBGT compatible model) (3) Momoko and Ayaka Environmental Monitoring Solution (environmental monitoring, recording, alerts) ◆ Main industries and achievements of implementation Local governments (offices, evacuation centers, nurseries) Educational institutions (playgrounds, gymnasiums, classrooms) Medical and welfare facilities (nursing homes, disability support facilities) Distribution and construction industries (warehouses, job sites, delivery hubs) General companies (reception areas, warehouses, employee break rooms)
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At ISAI, we offer a range of monitoring solutions including network warning lights (Keiko-chan / Meru Maru-kun), network monitoring, contact monitoring, PDUs, and network UPS, as well as IoT solutions for agriculture, distribution, factory automation, food, pharmaceuticals, education, and healthcare utilizing LoRa wireless communication. In the UNIX era of the 1990s, we developed an automatic shutdown device as a countermeasure for shutdown processing troubles. Subsequently, we focused on the development of network-related devices centered around Embedded Linux, and in the 2000s, we announced various networked devices and integrated management solutions. Even now, through unique products such as intelligent UPS, network warning lights, and LoRa wireless-enabled sensing systems, we provide advanced technology in a safe and easy-to-use manner, contributing to the enhancement of IT infrastructure. Additionally, ISAI leverages its achievements in server power management and automated system operations in large-scale core systems to offer a wide range of system operation technologies, including remote monitoring, equipment control, and the operation, monitoring, and management of power supplies (including UPS) via network.