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Specific Absorption Rate (SAR) Testing

Specific Absorption Rate Measurement

Ensure Your Wireless Communications Device Meets the Requirements for RF Exposure

SAR stands for Specific Absorption Rate. It is a measure of the rate at which energy is absorbed by a mobile device user’s head, body or limbs when they are exposed to a radio frequency (RF) electromagnetic field.

SAR testing determines if a wireless communications device meets the requirements for radio frequency (RF) exposure. SAR testing measures the heating effect on human tissue by using a ‘phantom’ that represents the electrical characteristics of the human head or body. Carefully positioned probes that measure SAR in watts per kilogram monitor the penetrating RF energy and the volume is averaged over a 1 or 10 gram volume of tissue depending on the requirements of the region.

Why SAR Testing Is Important for Your Business

Equipment manufacturers are legally required to declare the SAR rating of their products in many countries. In some markets, this information must appear on the outer packaging. Non-compliance may result in large fines. In the event that surveillance authorities question your SAR rating, acquiring a test report from an independent third party laboratory such as TÜV SÜD proves that you have acted with due diligence. Ultimately, this enhances your reputation as a trustworthy manufacturer that considers the safety of end users.

TÜV SÜD's SAR testing capabilities

TÜV SÜD America has the specialist expertise and SAR measurement equipment you need to get all your products SAR tested and on to the market. Our accredited laboratories in the UK and in Japan have an in-depth of knowledge and experience gained through many years of providing SAR testing services. Manufacturers, wholesalers, retailers, network operators and market surveillance organizations have all worked with us.

We provide accredited SAR testing to the latest worldwide standards, including those in the EU, US, Canada, Japan and Australia. We have invested in the most technologically advanced SAR measurement equipment available - the DASY 6 from platform provider SPEAG of Switzerland. We will:

  • Carry out requirements gathering with you to understand the market you are targeting
  • Understand your product and its purpose
  • Carry out a range of tests to measure SAR
  • Provide you with a product report and feedback
  • Provide certification

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