Assessment of exposure to RF EMF from smart meters in GB; part II) numerical assessment of SAR within human body

Abstract

Overview

Human exposure to radiofrequency electromagnetic waves from smart meters is becoming an increased concern for public health, particularly considering the widespread use of these devices in households.

Methodology

• Exposure configurations were studied using three realistic human models.
• Models represented a range of age groups with respective dielectric properties.
• Scenarios involved both standing and sleeping positions at frequencies of 868 MHz and 2,450 MHz.
• An overestimated power input of 1 W was used for testing, relative to the typical emission of 15 mW from actual devices.

Findings

Specific energy absorption rate (SAR) distributions were crucial in assessing the impact:

• The highest SAR recorded was 1.87 mW/kg in a child model positioned 15 cm from the 2,450 MHz smart meter.
• All measured SAR values were small when compared to International Commission on Non-Ionizing Radiation Protection limits, yet the proximity to these devices raises potential concerns on prolonged exposure, especially for children.

Conclusion

While reported SAR values are below international limits, the close proximity of smart meters to living areas could lead to exposure levels that may require further investigation to fully understand long-term health effects, particularly in vulnerable populations such as children.