vIRalert 2: Human Body Temperature Measurement System

In a world where global travel means infections can pass through populations fast, the ability to screen people for fever is a key tool in reducing the risk of disease spread.

The vIRalert 2 fixed thermal imaging system provides remote measurement of human body temperature (typically the face) to an accuracy of within 0.5°C enabling the detection of the small changes in temperature induced by a fever. 

Most economical thermal imagers can only achieve accuracy to within 2°C which is not adequate to detect a fever however by calibrating an imager in real time against a precise blackbody calibration source the vIRalert 2 system can provide accurate and reliable skin temperature measurement for the mass screening of high pedestrian areas like airports, train stations, key operational facilities and factories and other places where infectious diseases can easily spread.

Using simple and intuitive software, this point-of-entry system provides automatic on-screen and audible alarms to alert the operator so that early action can be taken to protect the premises against the risk of spreading the infection.


  • Instant non-intrusive measurement using infrared thermal imaging technology with market-lead temperature measurement accuracy.
  • Monitors for high temperature without slowing down the flow of people.
  • Fixed remote measurement removes the risk of infection transmission to operators.
  • Complete On-line System Solution works out of the box and is simple to operate.
  • Quick and easy to install and re-locate as required with standard camera fitting for flexible mounting options.
  • Automatic alert function reduces potential for human error and immediately alerts the operator if trigger point reached.


  • Transport and Travel - Airports, Railway Stations, Subways, Underground Rail Systems, Large Public Buildings
  • Education - Schools, Colleges, Universities, Municipal Libraries
  • Business - Manufacturing Facilities, Warehouses, Offices, Government Buildings



  • Thermal Imaging Camera - Continuously measuring 0 to 50°C / 32 to 122°F, with a 39 x 31° field of view and 80 x 64 resolution gives 5,210 temperature data points per frame, at a rate of 20Hz.
  • Certified Blackbody Heat Source - Providing a trusted reference temperature value calibrated at 38°C for the thermal imaging camera with a large plate for viewing at longer distances.
  • Connecting Cables - Ethernet and Power between camera and laptop (5m / 15ft).
  • Flexible Mountings - Camera supplied with wall mounting bracket and standard 1/4-20 UNC thread for use with alternative mounting options. Wall mounting lugs on calibration source enable easy fitting with wall hooks.
  • Screening Software - Continuous or still image showing normal temperature in black and white with abnormally high temperatures in red. On screen and audio alarm triggered if potential fever detected. Supply of Windows 10 Laptop for running software is optional.
  • Calibration - Each system is calibrated at our ISO17025 accredited facility in the UK.

A typical detection distance of 2 metres, in accordance with social distancing recommendations, provides a field of view of 140 x 110cm so that checks can be made without any contact with the operator.


vIRalert 2 Frequently Asked Questions


The camera is supplied with wall mounting bracket and standard 1/4-20 UNC thread for use with alternative mounting options. Wall mounting lugs on calibration source enable easy fitting with wall hooks.

The camera has a proprietary single connector with power and comms combined, split into a USB and ethernet adapter.

If desired, the cable could be extending using something similar to the items listed below. Note: these have not been tested by us, nor have we used these particular products. These are merely examples of what should work.


We can’t send specific SOPs, but we will include some guidelines for use in the revised User Guide which should be released very shortly.

The download link will be posted here shortly. Please check back soon.

There is no license required so you will be able to download and deploy to an unlimited number of machines.


vIRalert 2 Quote Request

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