User's Manual

4. Certif ication and Compliance

Sero contains radio transmitters and receivers. When on, Sero sends and

receives radio frequency (RF) energy through its antenna. The WLAN antenna

is located

in back view of “Get to know your Sero”. Sero has been tested and

meets the SAR exposure requirements for WLAN operation.

Sero is designed and manufactured to comply with the limits for exposure to

RF energy set by the Federal Communications Commission (FCC) of the United

State. The exposure standard employs a unit of measurement known as the

specic absorption rate, or SAR. The SAR limit applicable to Sero set by the FCC

is 1.6 watts per kilogram (W/kg). Tests for SAR are conducted using standard

operating positions specied by these agencies, with Sero transmitting at its

highest certified power level in all tested frequency bands. Although SAR is

determined at the highest certied power level in each frequency band, the

actual SAR level of Sero while in operation can be well below the maximum

value because Sero adjusts its WLAN transmitting power based in part on

orientation and proximity to the wireless network. In general, the closer you are

to a WLAN Router, the lower the WLAN transmitting power level.

Sero has been tested, and meets the FCC RF exposure guidelines for WLAN

operation. When tested at direct body contact, Sero’s maximum SAR value for

each frequency band is outlined below:

FCC SAR

Frequency Band (MHz) FCC 1g SAR Limit (W/kg) Highest Value (W/kg)

Model: E2281

1.6 1.152

Additional Information

For more information from the FCC about exposure to RF energy, see: www.fcc.

gov/oet/rfsafety

The FCC and the U.S. Food and Drug Administration (FDA) also maintain a

consumer website at www.fda.gov/Radiation-EmittingProducts/default.htm

to address inquiries about the safety of mobile phones. Check the website

periodically for updates.

For information about the scientic research related to RF energy exposure, see

the EMF Research Database maintained by the World Health Organization at:

Exposure to Radio Frequency Energy