What Is A Safe SAR Level?
2nd May 2018
To protect our health, regulatory bodies ask manufacturers of mobile phones to keep the RF emissions from the phones within certain parameters. We reveal what these parameters are, and why consumers should be taking extra precautions.
First, let’s start with some jargon busting, and basic information!
- RF = Radio Frequency, this is the type of energy emitted by a phone, and is a form of non-ionising radiation, so less dangerous than the kind in x-rays.
- SAR = Specific Absorption Rate. This is the specific rate the human body absorbs energy from a RF source.
- SAR limits are in place because excessive amounts of electrical and magnetic energy have been proven to be harmful to health. The aim is to keep the SAR level below limits that could cause harm.
- The SAR limits vary between countries. In the UK for example it is 2.0 W/kg in 10g of tissue, whereas in the US it is 1.6 W/kg in 1g of tissue.
- The SAR value varies between mobile phone models, so some emit far less than others. Some are as high as 1.59, and others as low as 0.4. Models by one of the most common manufacturers, Apple, routinely come in above the 1.4 value.
So, why are we worried about tumours, infertility, cancer and foetal damage if mobile phones must meet the recommended SAR values decided by regulatory bodies?
- The SAR value is based on absorption by adults, not children.
- It has been shown that the RF energy penetrates deeper into the tissues of children, and the younger they are, the more absorption takes place.
- The SAR value is based on the “correct use” of the phone, which according to all manufacturer guidelines is by keeping the phone away from the head and body, usually by as much as 2cm.
- If the phone was tested in the same manner that people actually use phones (against the head/ear/in the pocket) the SAR value of the phone would be higher.
- SAR tests are only ever carried out on phones without cases. Manufacturer guidelines include the information that phone cases may increase the SAR value.
So while a safe SAR level is deemed to be 1.6 W/kg, we can’t always be sure that is actually what we are on the receiving end of. This is exactly why the R2L was developed.
The R2L absorbs radiation emitted by mobile phones, and disperses it as light via an LED. The result is a proven 70% decrease in SAR levels, as tested and verified by the RF exposure Lab.
“The R2L… the very first device we did any testing on that we saw actually reduced SAR and was functional as a device.”
Jay Moulton, Lead technical Engineer, RF Exposure Lab
This means that with the R2L anyone using the phone, including children are at significantly less risk than they would be without the device. You can buy yours online at Screen2bsafe.com or on Amazon, and don’t forget to check the SAR rating of your phone here.