"WBGT Visualization" Heat Stroke Compliance Alert Device 'Miharu-kun'
WBGT - Automatically measures temperature and humidity & displays warnings! A multifunctional monitoring device that complies with mandatory heatstroke prevention measures.
This product visualizes the Wet Bulb Globe Temperature (WBGT) and can promptly respond to the obligation of heatstroke prevention measures. It automatically measures temperature, humidity, and WBGT, providing clear visual warnings through a three-color display and an LCD screen. When thresholds are exceeded, it immediately supports prompt response with flashing alerts and email notifications. Additionally, measurement data is automatically recorded and can be utilized for report creation and compliance with regulations. <Main Features (Bullet Points)> ✔ Automatically measures, displays, and records WBGT (heat index) + temperature and humidity ✔ Warning levels are highly visible with three-color lights + LCD display ✔ Flashing alerts & email notifications for threshold exceedance → Immediate response on-site ✔ LoRa wireless communication is strong against obstacles and stable over long distances ✔ Log storage support → Convenient for compliance and report creation
basic information
Official website of ISA Corporation - Product page Here is the official ISA product page: https://isa-j.co.jp/info/miharu/
Price range
Delivery Time
Model number/Brand name
Watchful-kun PRO <WD100-ENV Series>
Applications/Examples of results
<Main Uses and Application Scenarios> The "Miharu-kun PRO <WD100-ENV-LCD>" is widely utilized in various settings as a WBGT (Wet Bulb Globe Temperature) display and recording device that complies with the mandatory measures for heatstroke prevention. Factory and Manufacturing Work Areas …For monitoring WBGT and managing heatstroke risk in areas where air conditioning is ineffective or in high-temperature zones. Construction and Infrastructure Work Sites …As a safety measure on-site, it visually shares heatstroke levels, serving as a basis for decisions on work interruptions and hydration. Schools and Educational Facilities (Gyms and Playgrounds) …By visualizing safety standards through WBGT, it provides criteria for students' exercise and class activities. Welfare Facilities and Elderly Care Facilities …For users sensitive to changes in physical condition, it aids in warning management to maintain a safe environment. Municipal Facilities and Disaster Prevention Centers …From the perspective of responding to "Heatstroke Special Alert," it supports community disaster prevention and employee health management. In all settings, it realizes the four elements of "measurement," "visualization," "notification," and "recording," supporting legal compliance and on-site safety.
Related Videos
Line up（3）
| 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 | Watchful-kun PRO <Model with LCD> |
| WD100-ENV | Miharu-kun PRO <Model without LCD> |
catalog（1）
Download All Catalogs
News about this product（2）
-
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.
-
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)
Recommended products
Distributors
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.