Frequencies
Non-Ionizing Radiation (NIR)
Non-Ionizing Radiation (NIR) refers to the part of the electromagnetic spectrum whose photons do not carry enough energy to remove electrons from atoms or molecules. As a result, NIR cannot cause ionization and does not directly damage DNA or cellular structures.
In everyday life, people are continuously exposed to various forms of NIR — from power lines and residential electrical systems to radio transmitters, Wi-Fi networks, mobile devices, and other wireless communication technologies found within and around homes.
Main Frequency Ranges and Common Sources
Static fields (0 Hz) — constant electric or magnetic fields, such as the Earth’s magnetic field or fields produced by strong permanent magnets.
Low-frequency / Extremely Low Frequency (ELF) fields (up to ~100 kHz) — produced by electrical grids, residential wiring, household appliances, lighting systems, and other sources operating at 50/60 Hz and related harmonics.
Radiofrequency (RF) fields (~100 kHz to 300 GHz) — generated by radio and TV broadcasting, mobile communication systems, Wi-Fi, Bluetooth, cordless phones, and various wireless technologies commonly used in residential environments.
Optical frequencies (Infrared, Visible Light, part of Ultraviolet) — representing light, heat, and illumination sources. These frequencies are still considered non-ionizing because their photon energy remains below the ionization threshold.
Why NIR Matters within the IRESS 2026 Framework
Understanding the different frequency ranges of NIR is essential for applying the IRESS 2026 International Residential EMF Safety Standard. Each frequency band behaves differently, interacts with the residential environment in distinct ways, and contributes uniquely to the overall exposure profile of a property. Clear definitions of the measured frequencies ensure transparency, consistency, and comparability between different residential assessments.
As NIR-related technologies continue to evolve — including wireless communication systems, smart home devices, and modern building infrastructure — the International Residential EMF Standards Council (IRESC) continually reviews and updates its measurement methodologies and assessment criteria. This ongoing development ensures that the Standard remains scientifically robust, aligned with emerging research, and relevant to real-world residential living conditions.
By outlining the electromagnetic frequency ranges and clarifying how they relate to practical exposure conditions, IRESS 2026 provides homeowners, buyers, real-estate professionals, and residents with a clear understanding of the types of electromagnetic fields present and the meaning of measurements conducted under the International Residential EMF Safety Standard.