Data Sheet

16.4 Proximity to Human Body
When using the module in an application where the radio is located close to the human body, the human RF exposure must be taken
into account. FCC, ISED, and CE all have different standards and rules for evaluating the RF exposure. In particular, each regulator
has different requirements when it comes to the exemption from having to perform RF exposure and SAR (Specific Absorption Rate)
measurements, and the minimum separation distances between the module and human body varies accordingly. The properties of the
BT122 allows for the minimum separation distances detailed in the table below for SAR evaluation exemption in portable use cases
(less than 20 cm from human body). The module is approved for the Mobile use case (more than 20 cm) without any need for RF Expo-
sure evaluation..
Table 16.1. Minimum Separation Distances for SAR Evaluation Exemption
Certification BT122-A
FCC BLE: 0 mm
BR/EDR: 5.8 mm
ISED BLE: 7.9 mm
BR/EDR: 16 mm
CE The RF exposure must always be evaluated using the end-product when transmitting with power
levels higher than 20 mW = 13 dBm.
For FCC and ISED, using the module in end-products where the separation distance from the human body is smaller than that listed
above is allowed, but requires evaluation of the RF exposure in the final assembly and applying for a Class 2 Permissive Change or
Change of ID to be applied to the existing FCC / ISED approvals of the module. For CE, RF exposure must be evaluated using the end-
product in all cases when transmitting at more than the power level indicated in the table.
Note: Placing the module in touch or very close to the human body will have a negative impact on the efficiency of the antenna thus a
reduced range is to be expected.
BT122 Data Sheet
Certifications
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