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| SAR Value |
SAR (specific absorption rate).
There is legislation in place to limit the amount of Microwave Energy being emitted by the mobile phone handset, this is called the SAR rating.
All phones sold in the EC must have a SAR less than 2.0 (in the USA it is less than 1.6). The SAR is a measure of microwave absorption into the head, so it makes sense to choose a phone with the lowest possible SAR for the functionality you are looking for. This is the current advice of the UK Department of Health.
SAR information is provided by law by the handset manufacturers and is freely available.
User action: Choose a phone with the lowest SAR for the functionality you need.
More facts about SAR
- Phone SAR
The value of SAR is obtained using an approved compliance testing procedure under constant high power and as such is the only practical option for comparison at the point of sale. In practice the measured SAR will not be the same as that to the user as the phone’s power output may be on average much lower in normal use. If the phone is receiving a strong signal from a particular base station, it will require less power to communicate. This will reduce SAR in proportion to the reduction in the phone’s output power.
- Distance from the head
The antenna is the main source of the radio waves that produce SAR in the body. Moving the phone away from the head, for example by using a hands free kit, will reduce the localised SAR in the head but may increase the localised SAR in other parts of the body.
- Frequency of use and call duration
Using a mobile phone less will give rise to lower exposure.
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