Understanding Heat Stress Monitors

Wearable heat stress monitors prevent serious heat-related illnesses and incidents by alerting both the worker and supervisor when preset thresholds are exceeded.

Understanding Heat Stress Monitors
Core body temperature
Bodytrak Platform Features

Bodytrak Platform Features

  • Real-time alerts via the Dashboard
  • Alert notifications via email, text and WhatsApp
  • Location monitoring via interactive mapping
  • Geofencing to control safety zones
  • SOS user-activated alarm for rapid assistance
  • Configurability to customise alert thresholds
  • Incident reporting
  • Automated report insights
  • Secure and 100% compliant with industry standards
  • Intuitive, user-friendly interface

News and guides


How does a heat stress monitor work?

A wearable heat stress device typically uses sensors that can measure body or skin temperature, as well as the ambient temperature and humidity. While this was a positive shift for wearables, further innovation is now providing more accurate solutions. Read more.

Can I use the Bodytrak device in extremely dry or wet environments?

The Bodytrak device has been designed to withstand normal wear and tear under tough working environments, but it should not be submerged in water.

What is the most accurate way to measure heat stress?

For industrial workers, the most accurate approach to measure heat stress is through physiological monitoring that takes into account core body temperature as well as heart rate. Monitoring core body temperature provides a more precise measure to the body’s response, less affected by external temperatures and other variables. Bodytrak, a comprehensive smart safety solution, uses a wearable in-ear device to provide real-time data on an individual’s physiological responses to workplace stressors, including environmental heat, offering a more personalized and accurate assessment of their heat stress level.

Find out how modern technology and real-time data analytics can help organizations manage the risk of heat stress and proactively prevent heat-related illness.

How accurate are the readings taken by Bodytrak?

Bodytrak captures real-time physiological data using in-ear sensors, analysed by machine learning (ML) on the device and in the cloud to provide critical insights. Due to its close proximity to the hypothalamus, the temperature control centre of the body, and since the eardrum receives its blood supply from the carotid artery, the ear is an excellent body site to measure core body temperature and heart rate accurately.

Heart rate data from Bodytrak shows a mean absolute error of 2.87 beats per minute compared to a control ECG device, and CBT data from Bodytrak shows a mean absolute error of 0.18°C compared to a gastro-intestinal pill. Our fatigue scores have been validated during trials where mental fatigue, physical fatigue or drowsiness was induced to ensure precise data. This is a strong indication of the effectiveness of our solution.