• It is easy to carry and use.
• For “quick ‘At site’ WBGT index measurement,” “solution with low initial cost,” But “with high reliability.”
• It is the simple and high cost performance model suites for widespread use.
• The high reliability is confirmed by many associations and organizetions.
• Below chart of WBGT-index shows the criterion of heat stress warning specified by Japan Athletic Society in order to prevent heat stroke:
  

  WBGT[°C]	Types of warning and required rest
  Below 21	Safe (needs occasional supply of water)
  21 – 25	Note (needs immediate supply of water)
  25 – 28	Caution (needs to take rest)
  28 – 31	Warning (Stop active physical exercise)
  Above 31	Dangerous (Cancel physical exercise)

Specifications